So many reasons to want to go to the Pacific. I'll list below my thoughts.
Island Hopping: Teaches you detail engine management and navigation due to the fact that you need to know where you are going, find it and get there without running out of fuel. if you are going down, you can't land in some field.
Plane Sets: Some of the most famous aircraft in history; Zero, Corsair, Hellcats, Wildcats, Vals, Kates, Nates etc. So much variety, just like Eastern Front but different aircraft properties due to theater they fought in.
Carrier Operations: Need I say more?
Naval Targets: Those ships had some of the most dense AAA screens around. Loved trying to torpedo or bomb them and come out alive.