I haven't been around since Kumos was starting to be made/recoded, and I want to ask...is the design final? It seems so crowded and plain and...green. Is that the end-goal? Or is the layout still in-progress? because uh. I might need to start getting more used to Kumos if so, because I'm spoiled here.

Kumos is still in full testing phase. I guess the general look of it will stay, but Keith is still busy building it. The green is the riverside theme you probably mean. You can adjust that to the same themes that legacy has, via your HA icon in the right top, account settings, theme & appearance.

keith's been playing around with the design so i doubt its final but he has said it's not intended to be a 1:1 copy of legacy. so in either case it'll just take some getting used to!

A-ha! Yeah, I came back well after Kumos had started being built, so I was very ???

Plus all the images have white backgrounds, still.

But of course it'll take adjustment! It just... I'm glad it's not final! It didn't look final, you know?