yah, Shounentai's still active. they don't release music, but they do musicals and other things. Uchi & Kusano did their "trainee" work with them.
YUP. they're still Johnny's Ent boys, so it doesn't really matter if they all got different record labels. record labels don't really mean much, it's just the management that you're affiliated with matters.
LOL. Chinen is one step closer with Ohno.
EDIT: really? i think T&T's PVs are quite high budget! "Kamen"? "Ho! Summer"?