Everything that can track stars for completion should be sim-able at 3* (e.g. Credit Heist).
All missions should allow selections from your pre-made squads (e.g. some special events aren't).
Get rid of the delay timers on Challenges, or at least drop them when you've 3*'d them.
Allow squads to be edited even outside of running a mission or event.
Add filters to squad editor (e.g. show only Jedi).
In the character screen, add a symbol for gear that cannot be filled so that it's easier to spot completely maxxed out gear vs G11 but can still add a few pieces. There's the yellow-ish X for when you have a piece but can't fit for level restriction. How 'bout a yellow-ish gear piece.