That's what I did too and it seemed to work out much better. In the end I found that I used all modes more or less equally in different situations. I used fighter a bit in ground missions, and all three in aerial levels. I found that the battloid was quite useful in shooting down missiles and quick turns in the dogfights. Just had to make sure to keep your finger on the thrust button so that you weren't hovering.
My one really big gripe with the game. I understand why they did it(it let them restrict your movements in the ground levels so you couldn't just fly over the buildings/mountains/whatever and skip the hordes of zentradi between you and the goal), but I don't like it.
That was my biggest complaint as well. I can understand having a ceiling so that you don't go from ground to 10,000 feet, but at least let the player fly over the buildings.
Wouldn't have been that bad if they'd told you where he was beforehand.
That level as a whole dragged quite a bit. It was like they took 3 seperate levels and glued them all together just because they took place in the same map.
I didn't mind the protect/escort mission as much as some, but it was annoying that some levels seemed to require a trick. In the cat's eye mission, for example, if you just flew in circles dropping flares you didn't have to fire a single shot...As for online games, I've learned never to rely on other players to provide immersion for a game based on a franchise...