Losing map nodes to RNG is bad. Losing Citadel's is worse.

Please, please, please reconsider the 1 portal per map policy. It kills any kind of fun or momentum when you lose time spent prepping a map node with a boss and extra levels just because a Rare got an unlucky set of affixes like Proximal Tangibility, Haste, Mana Drain, etc. (Or a citadel like Vaal City makes it impossible to see an Execution attack coming because of the walls/nature of the map)

Deaths happen occasionally, it is ALREADY punishing to lose so much XP/time and the waystone.
It's NOT fine to lose time spent and enjoyment. It does nothing to enhance the experience or make it more rewarding, it's just exhausting.