For years I played through a rack setup using a Marshall JMP1 pre with two Marshall 9100 amps, the rig served me well for many years and I sold it all back in 2005 to my regret.
With the release Mesa's recording preamp I would hope Marshall is paying attention and come out with a new version of the JMP1. I would so love a rack preamp with all the Marshall sounds from the JTM 45, JCM 800-900, JMP 50, TSL, DSL and even the VM. The unit should have XLR outs as well as 1/4 outs to go into a A/D converter or into a power amp.
The ability to get these tones and record direct with it would make my ears happy as well as my wife...not that she complains at all. Marshall currently does not offer anything like this for the recording musician. I would hope they have plans for one in the near future.