This ^ ^

Why do arranger manufacturers think that crippling any 88 arranger compared to a 61 is a good idea? Generally, the 76 version of an arranger is identical to the 61 except more keys. Why make an 88 with far worse abilities than a 61? Do they think that pianists are so much less capable? Do they think that pianists don't NEED on bass? In fact, pianists need that MORE, if the truth be known.

Kabin... most decent arrangers have multiple velocity curves that you can dial in to make 88 controllers work acceptably. Not to mention that most digital pianos also have variable response curves. It should be possible to find a curve that works, unless you are using the cheapest gear possible - can't stand that NP30... that's not 88 wooden touch! It's pretty horrible plastic feel. Typical Yamaha!