Tiger Woods with MW+ and Balance board support could make the swing mechanics so realistic it could become a true golf sim. Possibly even a training tool for practicing your real golf swing. That may not be the case, but if so any and every golf fan will want TW10.
Not so sure it'd help Madden, FIFA or NBA any though. Boom Blox 2 is almost certain to use it.
Ubisoft has shown (IMO) that they 'get' the Wii audience with Shaun White. Red Steel 2 is in the works and you know RRR4 will be all over WM+ so I think Ubisoft may be an early winner with this.
Sega - You must be joking. Conduit's useage will be superficial at best and that's the only title Sega has (although Madworld probably should be) using it. Nor does their established library benefit from WM+. Sadly the best prospects (NiGHTS, Samba, Sega Tennis) are already out.
Taketwo - Here's another possible winner. Top Spin and NHL would definately benefit from WM+. So would a GTA game for Wii.
Capcom - WM+ used in MH3?? Why not?
LucasArts - We all want it - A Jedi Knight - Dark Forces game for Wii with MP+ and fantastic online multiplayer. HUGE!
But the BIG winner is Nintendo - Bet Sin & Punishment and Punch-Out will use WM+. And Nintendo has LOTS of other oppurtunties for it within their existing franchises. Starting with the unannounced but you know it's due Mario Party 9. Add Zelda Wii, Mario Golf, Mario Tennis, Mario Basketball, Starfox, etc.