Ok I did a test run restarting my franchise and selected several teams. They added several other drills however they are for confidence and not xp. This appears to be a flaw in thinking or design. In either case I think I am going to continue my current franchise as is and focus on developing 1-2 players vs 3-4 using non drills. Its ridiculous that you can't develop WR's, TE's, and OL like you can QB's. QB's have like 3 opportunities for XP.