I think combining two offenses in one is the reasons for the disconnect offensively. 

Toumas Iisalo’s concepts allows more ball dominance from lead guards. It has more mismatch hunting concepts. More short roll reps for players and more high - low concepts for bigs. It featured the bigs and screening a lot more. 

There are similarities in Laroche system those similarities are more centered around pace, ball movement emphasis, but there’s ALOT less screening. There are ALOT less sets and mismatch hunting. Much less free throw line occupancy and high - low opportunities for bigs. The NBA thrives off those things when it matters. 

We need more Tuomas principles and sets. Much less of the Laroche ball. Perfect for teaching the game and works on every level but in the NBA there must be more complexity and screening.