My biggest problem is I'll finally get a chance to sink enough hours in to start something AAA, do maybe 4-10 hours over two or three days, and then have life get in the way and not touch it for a month or more... and completely forget how to play and WTF I was doing.

Some of my favorite UX features in newer games are automatically and contextually reminding you how the controls work when you pick it back up after a while, and quick story recaps or quest reminders on loading screens. I like to label those games "parent-friendly".