Cold Sorcerrer doesn't scale well into maps

So I have been playing cold sorc (storm weaver) since the beginning of early access and I love the aesthetics of the cold spells. I am using Frostbolt, Frost wall, Frost Bomb, Cold snap and Hypothermia.

I never got the chance to use CoF comet before the nerf but used it until tier 3 waystones. I have had to swap it out for Arch mage because I found that about 30% of the time they wouldn't land on the enemies and about 20% of the time they wouldn't trigger until the enemies were basically dead. Then in boss fights, I would get maybe 1 trigger of my CoF even after freezing the boss 3 or 4 times in the fight. Even when CoF comet did land, it didn't do a lot of damage.

I am now nearly done with the 10 tier 5 waystones and, while I can clear maps fairly well, it takes me 20 to 40 minutes, maybe even longer sometimes, to clear a map depending on what type of map it is. While I don't mind a map taking a while, its frustrating when I get nearly to the end of the map and die; mostly because I'm not good at the game but definitely there are times when things are just unfair (more on that later).

I pretty much refuse to participate in breach because the cold skills take so long to kill enemies and cold damage relies heavily on freezing enemies that I get swarmed and stun locked to death before I can kill any meaningful number of enemies.

Delirium I like, but I have to leave it until I have finished the map because the map mobs in addition to the delirium mobs is too big of a swarm for my abilities to freeze or kill before I get swarmed and stun locked to death. Even after finishing a map, sometimes I get unlucky and get flanked by multiple groups of mobs in a tight space or from around corners that I cannot hit with my spells.

Expedition I love because I have time to plan. I get to decide where the monsters spawn from first and can set up frost walls as they spawn so that I don't get swarmed.

Ritual is kind of similar to delirium except a little more painful because it hems you into a small space which gets even smaller when I have to cast frost wall.

now I know I'm not great at the game and sometimes my issue is positioning, however, compared to a lot of other builds I have seen, cold sorcerer definitely is suffering a lot in terms of damage. In addition, there are some issues with cold skills that I have noticed.

Frost wall: It seems really common for enemies that are either moving quickly, or that are of sufficiently small size, to be able to just walk through frost wall. I have had some medium sized enemies walk through it as well and that, I think, is partly a result of the delay between pressing the button and the walls spawning. If the enemy is close to you and you cast frost wall on your feet, sometimes the medium sized enemy will walk onto the spawning location of the wall but instead of breaking the wall fragment like a large enemy would, it just walks through it. This is partly why breach and ritual aren't good to do for me because my limited space gets further limited by my frost wall which then fails to keep enemies at bay while stopping me from being able to dodge.

Cold snap: I'm not really sure if this is a bug or just how the spell is designed. I have found that sometimes it is really difficult to target exactly what you want to cast cold snap on. There are two instances of this, the first and most obvious situation is when there are a lot of targets within close proximity to each other, such as when you increase the number of projectiles on frost bolt. The second situation is a little more baffling to me; sometimes when there are one or two frozen enemies left, whether they are close together or not, and no other legitimate targets (such as frost bolt) nearby I can spam cold snap and it will play the animation and take the manna, but not hit either of the two enemies.

How can cold spells be improved:

Im not a professional game designer and I don't really know much about GGG's vision for the game so I can only make limited suggestions. Hopefully, they can at least inspire GGG.

first and most obvious, fix whatever is causing enemies to be able to walk through frost wall and make cold snap a bit easier to use (I'm honestly not sure how you could do this). maybe cold snaps issue is a hit reg issue?

Damage issues:

-I think frost bolt could do with a slight increase in its projectile speed.
I have the acceleration support gem on it and they still take a bit too long to reach enemies, letting them close the gap very quickly

-Ice nova could do with higher base freeze build up and/or a strong push so that it can be used defensively. I have Unleash and Glaciation on it and still never use it because it; a) doesn't push enemies back enough to use defensively but pushes them too far apart to use offensively, and b) doesn't build up freeze quick enough to be used defensively or offensively compared to frost wall and frost bolt

-Frost bomb is great as it is, I would just like a few more options to further reduce its duration so I can use it more proactively. Currently, I have to rely on trapping enemies with frost wall (see above for issues with frost wall), or wait for enemies to be frozen to reliably hit things with frost bomb. If more options exist other than the Fast Forward skill gem and Forthcoming notable that I have overlooked, then this feedback could probably be ignored.

-Cast on freeze could do with gaining slightly more energy per enemy power (maybe like 20 energy or 15 energy per power) or decrease the maximum energy per cast speed (maybe change it to 10 energy per 0.12 cast speed?)

-Ultimately, I think if crafting was fleshed out a bit more so there were ways to craft a bit more deterministically in early maps and/or exalt orbs were more common, then I think that would also alleviate some of the damage issues. However, this would not make cold spells as viable as the spark build people seem to use as it would instead, make crafting for all builds more viable

I have other concerns with the ascendancy being locked behind the trial of sekhemas and the trial of chaos, but that is a bit beyond the scope of this post. It is worth noting, however, that making cold spells more viable would also make these trials more bearable for cold sorc stormweavers (Having said this, I enjoy these trials, I just don't think they are right for ascendancies).