We might already saw that if Air Cavalry wasn't convert into Escaflowne.

Think of it this way.
Batroid = ground force
Gerwalk = helicopter
Fighter = ...as name implied

Off topic: In SRW series, Gerwalk allow the VF to hover on water-surface.

Macross VF-X2, which occur after event of Macross 7, still feature Destroids. And as I said, there is even a transformable one. http://www.mahq.net/mecha/macross/vf-x2/vb-6.htm

While I agree that unmanned fighter is very reasonable in Macross universe. I just hate how Ghost X-9 alway appear on enemy's side. Macross Plus, VF-X2, Super Robot Wars...all of them...

Fire Valkyrie's face is more like various super robot (Dendoh for instance). Seriously, I'm thinking of various VF from Macross VF-X2 and there're so many possibility. Invader has built-in arm beam gun similar to Zaubergern, Excalibur and Sturmvogel II has pin-point barrier, K?nig Monster is tranfor...

Valkyrie? Well, it will stay the same. Even upgraded VF-1X has same look with original VF-1 since they only change internal engine (correct me if I'm wrong).

Now if we are going to talk about other variable machine like Excalibur or Invader...

I still not quit Ragnarok Online, just not play as much as before.
Now I'm more of playing old DOS game, just got SSI's Fantasy General and it's quite good (my PC just couldn't handle most new release game).