The current sidebar is what it has always been, and hasn't changed for awhile. I think that along with all these crazy new updates with RESPO the sidebar needs a little loving too. Adding a customizable "Quick Links" section for things like Item Market, Travel Agency, etc; while giving players the ability to remove things they don't personally want, like Newspaper, Gym(???), Jail, and so on and so forth. It's not a big deal, but it's an ease of access thing.
Also being able to reorder the links in your own order of preference would be cool too. Just so you could have things that go together in your head together.