I've only installed one addon in the week I've been flying the new FSX and it was just an exclude file by Jon Patch

Everything is new in FSX so most of my time is spent flying around and enjoying the new sim. The default everything in FSX is improved over the former sims: seagulls fly by, sailboats, launches and ships ply  the waterways, vehicles -- cars and trucks -- travel the roads; there's a plethora of missions to fly . . . like I said: so many FSX features -- so little time