Here is my list of changes I would love to see:

Progress Deletion
Let there be an option similar to Super Smash Bros. which lets you delete various parts of your save data. For instance, you can delete all the ships you've unlocked, or all of your times, or all of your campaign progress. Many times I've wanted to start the campaign all over again but cant really unless I wipe all of my data (which I don't REALLY want to do).

Custom Grid Creation
Just like in Pulse, you were able to make your own grids and race them. I think this is a feature that SURELY is lacking from this game. Give me the chance to make up a series of grids that I can SHARE with other people... I really don't know why this wasn't put in in the first place...

Those are the main two I can think of for now... Thoughts?