I'm doing clean up work on the base units plus cutting the keys for the long stretcher tenons. When I get tired of doing one I switch to the other, short attention span dontcha know.
The keys could be made on any bench but cleaning up the base units is much easier if the bench has an apron like an English bench. To do the clean up on a bench without an apron you would need a deadman, a bench jack, or setting clamps cross bench. All of which are a PITA compared to using a deep English style apron. The problem with the English apron is it makes using bench dogs a PITA.
My answer is to have two benches, one with an apron and one without. The job determines which bench is used.