I've got a very study Richmond 5" dividing head that I've converted to run on the very useful Divisionmaster (designed by Tony Jeffree, sold by Lester Caine). A 5" dividing head is a hefty lump and the problem that I've encountered is that if I use the dividing head with a tailstock to support longer jobs there's very little milling table left for the workpiece.
I was contemplating converting my 6" rotary table to a stepper drive and using that as the dividing head with a suitable tailstock. This will free up about 12" of milling table. If I replaced the dividing head entirely with a converted rotary table are there any downsides?