As far as I'm concerned, the resettable gacha events are my favorite ones. The RNG factor isn't that big a deal in the early stages, as they're cheap and you can skip them once you get the item anyway. Nor is it that big a deal in the later stages, as you end up clearing most of it anyway due to the other nice rewards (level 100 manyu and dragons, in particular).

The only real issue is if you're starved for currency - like with, who was it, Gaillardia? I forget - but you can usually still manage if you focus on farming the event, instead of some of the daily dragon or manyu maps. But you *get* manyu and dragons from the gacha anyway - sure, not quite as much, but it helps offset it. At the very least, farming the event map doesn't feel nearly as pointless (except for currency) as some others.

...Besides, even if you do fail to fully clear the resettable gacha, all you miss out on is a piece or two of jewelry - which, while powerful, can be replaced by any other event's jewelry. It's not the end of the world. And if spending stamina on other maps is more important than a piece of event jewelry, then more power to ya.

And on the topic of the "zero stamina limited time" bonus stages... Honestly, I see no real problem with them, even if you can't run it three times per. I kind of wish they were on a 5 minute timer to enter, but 1 minute timer in-level. The 5 minute timer would tick down as normal, and the 1 minute timer would only tick down once you were in the stage; if either timer hit 0 you wouldn't be able to enter again. That feels like it would be the most "fair", to remove the whole super-long-loading-time issue from the picture entirely, while still emphasizing bringing a speed team.

...While I'm dreaming, I want to pull a Lycoris. And Setaria. (I know my priorities.)