Second option, and I'm pretty sure that option will win with a landslide. We've all been spoiled with the previous GBAtemp version, where so much was possible and customizable and hence we expect those things to stay forever. Now when we lose those small features we really liked, and instead get much bigger new features we don't know yet, we get pretty pissed off.
I'm 100% sure the staff will try to listen to all the 'complaints' from the members and they will try to give us back all those small features we liked, it'll just take some time.
AND I'm fine with waiting some time, the people who were behind this upgrade deserve a break, I wouldn't mind waiting on some changes for a month now.