Star Fox 64 had a more adventurous spark in it. But in Assault, you can travel by foot, Landmaster, Arwing, and Wolfen. So my suggestions for each game are as such:
Star Fox 64: Include more manual transportation. It really annoyed me when I was merely hovering over the ground, my Arwing imploded from gunfire, and I was dead.
Star Fox Assault: This game puts too much importance to manual combat. There is but one mission where a Landmaster is required. The Story Mode missions include infiltrating a base or HQ of some sort. So sometimes to me it feels like I'm playing the same mission in a different setting.
If you see me posting, it's because I've been asked to. Which I guess would mean I'm taking requests.