They've got a goldmine of games and they're only not making money off of them because they don't want to.
Anyhow, there's the NGC-Wiimote (the newly designed NGC controllers that plug to a Wiimote) so if you made your Wiimote "wired" (buy one of those cheap rechargeable batteries with USB cable) then it'd never run out of charge, though that'd still be a mess of cables but perhaps a better choice since it'll work always as a Classic Controller (this however, we still don't know for sure if it'll function with other games than Super Smash Bros. as Nintendo of UK stated).