After a whole year since the release of the game, Uber Lilith finally feels balanced - she's not easy at all, but she's also not abysmally hard like in the pre-season. She definitely feels like a proper pinnacle boss now. Some of the QoL changes also make the fight way more enjoyable. The attempt in the video wasn't perfect by any means and I could have significantly improved my gear before attempting this, but it was good enough to get the job done. There are a couple of remarks though:
1. In every 3-4 attempts, Lilith's health bar in phase 1 gets stuck at around 1% and she can't be killed, which voids the attempt.
2. Minions and especially the golem, who is my main damage source, are dying way too often, which makes the fight way longer. Eventhough I was trying my best to not have them killed (moving towards the opposite corner on every platform break and placing blisters in phase 2 in the left corner) they're still dying too much. We definitely need to have a command function to control minion movement, because the AI is just terrible.
3. Uber Lilith still doesn't drop the resplendent spark 4 days into the season, which is kind of unacceptable considering that it's an easy fix.
Although we didn't have a seasonal mechanic (Iron Wolf doesn't really count), the improvements that they've made to the game are a huge step in the right direction and are good enough to make the season worth playing.