I'll be honest, I went back to some OLD bootstrap styling for some things and I liked it a lot. The candy looking buttons are nice ...

I'm done with flat and muted all the time.

Also (more to my example) it looks like a realistic UI. A lot of game stylized UI are UI nobody would ever make intentionally for a thing you're supposed to use often.

So yeah like you say just some depth and realistic UI feel goes a long way.