affs2 has no vfr terrain, so i would go with A380, B737-900, B787
or finish existing models before starting new ones? current are far from complete.
most models are available for other platforms, why not cooperating with the experts?
think about converting those to accelerate affs2's pipeline on real needs like nav, atc, ai, wx, fpl, ground ops, etc. 😯
No VFR terrain...? Imho Aerofly FS 2 is very suited for VFR thanks to the photoscenery. And imho the scenery is less suited for airliners because the regions aren't extremely huge, specially not for those big lone range airliners you are asking for.
Concerning the models being far from complete: these are default airplanes. How complete are default airplanes from other sims? I don't think any of the default planes in FSX for instance is as good as Aerofly's Dash or Airbus. Yes, they aren't complete but offer quite a bit, I'd say.
And converting FSX/P3D/XP planes to Aerofly FS 2 isn't that easy: this sim uses a totally different system so those planes have to be almost build up from the ground again.