After MGS4's impact of PS3 sales in Japan what more on Wii's impact when it featured hype and popular games on the system. I think these games will be shown in E3 this year this is the only way Nintendo will beaten the competition.
About catering on new audience I think SONY and MS was too late on that, even with motion controls and casual approach that will done by SONY and MS I think Ninty already captured it. This will be the time that these captured audience make it to upstream this will be shown in E3.
end of core gaming days prediction:
E3 2006-The beginning of the end. Wii introduced
E3 2008- Armageddon. Wii motion plus introduced. Wii Music. Reggie says Animal crossing was a core game. Massive disappointment. many Wii core gamers selling their Wii.
E3 2010- Tape runs out
http://www.fivedoves.com/letters/march2009/ICG_Tape_runs_out.jpg