I replied to you about the new coach thing. I think one should have a replacement in mind first, before you can dump the current one. Avery is good, but he's not someone Cuban just digged out from nowhere. He was a leader for many years, as a player. In the Spurs team, he was the vocal leader, instead of TD. He was assistant coach of Nelly, who built the team from scratch, and stamped that high offensive tempo on that Marvs team. Dirk is in his prime. Look at their roster, look at the young guns they have, look at their bench, they have frigging Stackhouse, a formal franchise player, all-star coming of the bench! And rockets have NDBLer to start the game. It's not even funny.
How could you call that to Avery's credit only? Lots of assistant coaches steping into head coach positions, are home-grown. They went from assistant -> internal -> formal head coach. Stan, Rick Carlisle, Avery and bunch of other all went through that way. The organization have a clear look of your qualifications, and keep the continuity.
NBA head coach is not an easy task as some of the internet lurker made it out to be. The risk to go for some total unknown commodity is simply too high. Simply saying replace JVG with some good assistant coach (no name was given, except for some unavailable head coaches of other teams), is too easy to say. if you think that would fix Rockets' problem, that would be too easy and too good to be true. Anything too good to be true, is not true.