I’ve been on the ios 26 beta since day 1 of the first developer beta drop (on both my work phone and main device too, please don’t be like me) and I’m the sole oddball that loves liquid glass and how gaudy it is sometimes 
normally I much prefer flat design but something about liquid glass looks more appealing than the recent iterations of flat ios. Especially the new three-island bar in safari and the little boingy bubble effect when selecting different tabs in some apps like in apple music.
There’s a lot of details that feel unfinished though. The edges of the keyboard, random flickers/stutters, how the new toggle buttons look like they all accidentally glitched into an elongated oval, something about the rounded edges and spacing of the bars in the settings menu feels jarring. Definitely the most unpolished ios release and it’s not even close, it’s almost embarrassing how many bugs and visual glitches/inconsitencies were left in.
As for battery, something’s wack with the thermal management in the 15 pro maxes because my battery capacity crumbled faster than a nature valley granola bar. That issue started happening long before the ios 26 dev beta though.