I could sort of understand a reaction like this if Rose wasn't facing a rape trial and away from the team for 3 straight weeks. Or had Noah been healthy.
The two biggest changes in the core/starting lineup are Rose/Noah. And they both have barely played together with Melo/Porzingis.
The fact is Rose does have the freedom to run screen/roll. He can do it virtually any time. He has the freedom to push the ball up. The issue right now is that Rose is a ball dominant player, and is is not on the same page with another ball dominant player like Melo. It takes time for all the pieces to fit. Sometimes they never do.
I don't know how anyone who watched preseason and saw how Jennings did with the starters can blame this on the Triangle or Phil. This is a Derrick Rose problem. His personal life has directly affected the Knicks preparations and season. People wondered why the Bulls practically gave him away, this is why.
Jennings didn't play well against CLE, but I saw a similar lack of chemistry when Rose started against Houston. I found when Jennings started the team played much better, because he's more decisive and less ball dominant than Rose. Jennings is more willing to play the 4th/5th option role than Rose is. Rose basically needs to become a SG/combo guard more along the lines of a Kobe, and that will take him a lot of time.
Way I see it, give Rose a month. If he's still not looking good, you make a change.Switch Jennings with Rose. Heck even Baker. I am also in favor of trying Jennings at PG, Rose at SG. Let Rose be more of a natural scorer, instead of trying to worry about picking it all up.
Last thing, Melo was 5-0 in Knicks season openers. Last year we blew out Milwaukee on the road. Looked incredible. Then by season's end, we looked like we could only win a game once in 2 weeks. I much rather start slow and get better as the season wears on and peak in Feb, March and April heading into the playoffs than the opposite. So long as we stay close to .500 for the first 6 weeks I'm ok with guys needing time to understand each other. Heck, Miami in 2010-11 were playing .500 ball for the first 20 games of their season. Lebron's first season back with Cleveland, they began very slowly. When you add a lot of talent together it takes time. We're not on the same level as Cle/Miami but we have a heck of more talent this year than last. It will take time. Especially when guys like Rose basically skip 90% of presason due to their trial.