Most of all, IoA just needs more regular upkeep. Some fresh new little interactive touches would be nice, too. Otherwise:
1. Roptor Pen.
2. Nighttime show.
3. Poseidon's Fury rehaul, eiether return it to original or add more scenes. Just make sure it stays a walkthrough. We don't need another big coaster or water ride.
4. TL wild mouse coaster involving water, maybe Krazy Kat.
5. Return Trike Encounter.
6. Return Islands Skipper Tours once LC-JP bridge is removed.
7. Permanent show in TL theater.