Let the madness commence...
I would hope that ALL Yamaha users that are likely to buy one of these gets a hold of Yamaha and tells them in no uncertain terms just what a lousy feature the audio drums and multipads feature is on the S950. Until you can import your own drums, until the multipad audio feature loops in sync with the arranger, it's a boondoggle.
Look how few of the audio styles anyone can use in the S950. There had better be a MASSIVE increase in them for them to be of any practical use, and they had better be more integrated into the 'sound' of the T5 than they are in the S950, and there had better be a MUCH greater choice of extra ones to buy online, and a faster way of loading them in.
TBH, why don't Yamaha bite the bullet..? If they think their arranger drums suck so bad that they need audio loops to make it sound better, why not just stuff the darn thing with great new KITS, and drop the entire drum audio styles feature altogether?