Not a big fan of Vinny although he's apparently well-liked by players.
Still not convinced Doc is leaving. Bulpett's weekend story suggested Boston expected him back, with concessions from the team to allow him to miss practices now and then to see his kids. And Doc's WEEI interview wasn't declarative one way or another on a literal or tonal level, IMO.
If he does leave, I'd be pretty crushed. But Kevin McHale would be my choice, not just because he seems to have the makings of an excellent coach but because his presence might ensure a longer term for Danny in the GM's chair.
Really don't want to see Doc go. If he IS gone, I really think Jeff Van Gundy would have as good a chance as anyone of connecting with these guys and continuing all of the good things that have happened these past three years. Guy's smart, well-respected, defensively-oriented. Think he'd fit in well.
If those rumors about Doc taking a little more time off (but still staying head coach) are true, I think you look to bring in Lawrence Frank as the Assistant Head Coach. Can't have two head coaches, but you can have #1 and #1a in his absence. Frank's another smart, well-regarded guy. This season was a disaster in New Jersey, they basically mercy-killed him out of respect before the losing got too extreme. Still, he generally did a good job, he's got experience working with some strong personalities. Not sure I'd want him as head coach, but rather have him handling a few practices or maybe on the sidelines of a few games than someone without any head coaching experience (like Thibs).