Thinking about UI changes for features that still need to be ported over to a new code base (if I have to rewrite anyway, this is the time to make such changes) and I'm thinking that UI patterns I first encountered on 1980s era Macs might be a more appropriate choice sometimes. Definitely not saying they got everything right, but there's some stuff that's fallen out of favor that maybe shouldn't have. It won't take me long to mock something up and I can decide if I hate it after that.
I suspect that the average age of people using my software skews older anyway (this is at least true of people who have told me in person that they appreciate what I'm doing) so they might even find such things more familiar/intuitive than what I did last time around.
