There is definitely still interest in the vintage look. Those 70's receivers still command a crazy price.
I helped someone put a small system together who only wanted to spend about $400.00 on the amp. I showed them the Yamaha 301 integrated and the Dayton Audio HTA-200. No contest, they chose the Dayton just on the look. The unit is a hybrid seeing the tube got them excited. I was really surprised at how well that unit sounded for $400.00. It drives a set of Kef R3's pretty well.
JBL put out an integrated amp with a retro look. There were others just can't think of them now.
My preamp has menus which once set up I don't have to mess with, my preference would be something like Pass where it's a straight forward preamp with no menus, keep it simple.
I'm really surprised someone hasn't already offered some type of 70's replica. I just wonder if that resurgence has peaked already or not.