The reason to deal Melo now is that instead of drafting 12th or 10th you will draft 6th. It could be a differnce in getting a quality role player and an all-star with KP's type of future. You want to be in position to get guys that have all-star potential and talent. You won't get that unless you are very very lucky where the Knicks are right now in the draft.
The other thing is Melo's presence will mean he will always be the man on the team. Removing him allows younger players to step up and shine. Show what they can do. Same with Rose. If we look at things objectively, it's far better to be a 60 loss team that can draft players with KP's potential and to work with that than to be a 50 loss team with Melo and Rose putting up stats and taking up high usage of plays.
I'm not blaming Melo for all the losing or the fact that Noah, Lee and Rose have all been unable to defend at good enough a level. However it's time to get some longterm assets in place. No free agent of all-star status with prime years ahead is signing with the Knicks in free agency. They're not a contender with what they have. So how do they get better? They won't. They'll be stuck between a .400 and .500 level team rest of the way.
Trade Melo, tank and let KP rest as long as possible. Find a taker for Rose, otherwise after trade deadline waive him. Give minutes to players like O'Quinn, Hernangomez, Kuz, Baker and Holiday. Start thinking about next year already. When KP comes back fully healthy, ask him to be more aggressive and try to do more. He may fail, but he will learn. He will learn what it's like to be the man and he'll be more ready next season to deal with.
We're going to win between 30-35 games the way we're currently set up with Rose/Melo. If by some miracle KP, Rose and Melo all stay healthy the rest of the season they may be able to win 40 or 41 games. Smart bet is they won't stay healthy. It's not lost on me that we have a winning record with Rose/Melo/KP in the lineup. Even better when O'Quinn starts. I know there is real talent here. However how things have gone, making the playoffs is not so realistic. So with the situation what it is, blow things up and try to get the best draft pick possible.
If we didn't tank or Melo does not have knee surgery in 2015, we would have not gotten KP. Surely we would have drafted someone good because that draft was great, but at 6 or 7 we would have gotten a Mudiay or lesser player. That's why you want to draft high. Make a decision. Melo and Rose on the team means the Knicks will be drafting 10 or lower. We want to aim to be in the playoffs or draft 6 and higher.
And if the decision is to still try and make the playoffs, Phil needs to step in and make a coaching change. Rambis and Horny out. Phil needs to either coach the season out himself, or find someone who has enough defensive smarts to make the defense better ASAP. Horny has lost Rose and doesn't have the vets playing his style of ball on either end. It's a bad fit.