I'd suggest re-working the Hawk job, changing the name to 501st Pilot and bump up the slots to 6. You'll all have the Pilot skin, albeit Hawk but a pilot none the less. Then you just differentiate each other by the names you use.
501st [Blue Squadron] Pilot (6 slot)
501st Blue Squadron RANK Hawk
501st Blue Squadron RANK Axe
501st Blue Squadron RANK Slammer
501st Blue Squadron RANK Kickback
501st Blue Squadron RANK Swoop
501st Blue Squadron RANK Tucker
And so on. You get your pilots job slots increased, get Blue Squadron, no need for models/jobs added/removed. The only thing you lose is the uniqueness of being Hawk (the only person with his particular model) but it's a small sacrifice to get what you want at minimal cost.
Bonus: There is no way you'll get 5 new models for 5 new jobs, zero chance that suggestion will past. But what you can do is once your turn comes to do your models, give the desings of all the pilots to Gideon/Kyle and make that a Helmet bodygrouper. That way you each get your own helmets all on the same job.
Also want to add that under no circumstances should anyone see an unnamed pilot on the job or a PLT with any other name but the ones listed above. The whole purpose of the change is to get those characters in, not unnamed pilots.