I am so bad about Extreme Endless Corridors. I don't even know if Gabe can do it or not, I just don't have the patience to mess with it right now. Maybe if we ever get a week with not much going on I'll look into it, but I don't think I've ever gotten past like floor five before I just quit out.
Should be extremely doable with a high-utility Ra team (maybe with Izanami and Metatron) on Big Board Mode, but I don't know that I'm good enough at raindbows yet to clear it with him in normal conditions.
I was impressed by how easily I was able to work with the tiny orbs, though. As you've probably seen a million times over from every single thing I post from my phone, my big dumb fingers tend to mash multiple keys a lot. But I didn't really noticed a difference with PAD, which is great.