They likely lost some Tyros sales to the S900. Didn’t seem to bother them…

Personally, I feel some types of sounds benefit (and historically used) a lighter keybed than a piano. Organ, Clavinet, synth’s etc. were all triggered from light keybed, and many performance idiosyncrasies are very difficult and taxing on a fully weighted piano action. Palm smears, bouncing keys, all kinds of things don’t lend themselves well to the piano action no matter how good your technique.

I regularly skin my knuckles badly every time I play rock organ on an 88!

I think the SX900 with a weighted 88 underneath it is the best of all possible worlds, especially how light some modern 88’s have become while still keeping the key feel. You can probably run everything from the SX’s controls, so rest the SX on top and get the two actions really close together (like an organ!) and it should still be comfortable to play…

Modules are cool, but unless you intend to only play piano parts, or only synth parts, two controllers are still going to be needed to get the best out of them, IMHO…