Any suggestions on good Wiiware exclusives? I'm going to use the points up on my Wii I had stored, and then transfer it over to the Wii U
TBH there are very few good Wiiware exclusives (at least 100%), but here are the ones I would recommend that are mostly exclusive:
LostWinds 1 and 2 (they recently fixed the issue in the past where you couldn't port it over to Wii U)
Castlevania the Adventure ReBirth (also remakes of Contra and Gradius too, these are 100% exclusive)
Bubble Bobble Plus! (Technically exclusive, though they came out with a similar Neo version on 360 later on)
Fluidity (Was available as a free CN reward twice now, but if you haven't played it, do so, its probably the best 100% exclusive Wiiware game)
Moto Heroz (expensive, but the closest thing to Trials on the Wii)
La Mulana (its out on the PC as well though, still worth it for 1000 points and mostly exclusive)
Jett Rocket (probably the only really good exclusive 3D platformer on there)
This is in addition to the mainstays that aren't exclusive but still worth it (Megaman 9 and 10, escapeVektor, Swords and Soldiers, And Yet It Moves, etc.), as well as tons of puzzle games (too many to mention here). I'd mention the Bit.Trip series, but its a much better idea to get the dirt cheap Bit.Trip Complete compliation by now.
I would also recommend getting certain VC titles like Chrono Trigger, Secret of Mana, and Monster World IV if you haven't already.