I have noted there is a Mark 7 Autodrive available for the 750.
I did order more stuff for it yesterday... Another full quick change kit, a bare toolhead and stand, spare parts kit, and a caliber conversion for 45 Colt. I was already set up for 45 Colt and 10mm on the SDB, but I have found that the little press is a lot happier just loading smaller pistol cartridges like 9mm/.38/etc, and especially the 45 Colt runs it at the edge of what it can realistically handle, so I am moving those calibers to the 750 (I already had regular die sets for them).
Currently re-evaluating my primer pocket swaging setup. I have both of RCBS' tools (the press mount and their bench mount unit) and I am not really happy with either of them. The first is just too slow, while the bench unit doesn't always swage the pocket fully regardless of adjustment. A 1050/1100 (which has the swage function built in) was never in the budget, and while there is an aftermarket swager made for the 750, use of it will void the warranty, which is a big part of the reason for going with Dillon in the first place. I will most likely buy Dillon's bench swager and see if that works more consistently than the RCBS unit. I like the ergos of the RCBS but it doesn't get the job done reliably; I still end up with pockets that are difficult to seat primers in and won't accept a go gauge.