I know this is a massive lift and will likely never happen, but...
...if someone hacked SaGa Frontier 2 to be more akin to the open-world SaGa games, I would be so incredibly grateful. What I mean by this is having the traditionally open-world exploration, probably in the same vein as the RS games, with customizable parties. I think it would be easy from a writing perspective to make the plot stay generally the same (minus the generational stuff), but the various locales really need some sprucing up, not to mention the ability to return to them. Fix the money transfer thing somehow too--like, a bank system or something?
I may have griped about this before, but there are a lot of good things about this game that I think could be a lot better with more traditional SaGa features. I think you could make the same argument with Unlimited SaGa too (I know I've groused about those turn limits in this thread somewhere).