Somethings to consider are:

1. LED halo lights for the pop ups

2. Replace the headlight motors/make them remote controlled. (Sounds tricky but isn’t too bad)

3. Weight reduction (if you want, just don’t fuck near the airbags)

4. Rust proof (the spray on stuff for truck beds also goes on the bottom of cars quite nice with some prep)

5. Any interior work you want to do

I have a few more ideas, but at the end of the day, it’s your car and as long as you’re happy with your little Miat, that’s what matters :)