Basically I would like an A/B box with a tuner out, with an effects loop and blend for each channel.
Obligatory ugly ASCII diagram:
Channel A---> FX loop A with blend----> Amp A
|
Bass-> Box o' Fun
|
Channel B--->FX Loop B with blend----->Amp B
|
Tuner
(ok, frustration.... can't get the diagram to display correctly... the 'box o' fun' is the splitter unit...)
Does anyone know of an off-the-shelf unit that does this?

I've looked at Loooper, Barge Concepts, Toadworks, etc..... am I missing something?
I have some switching boxes strung together now, to achieve the same general end, but that's a waste of space that could otherwise be devoted to fuzzes and other implements of destruction (I'm sure you all agree

), and more cables creates more opportunities for things to go wrong compared to having things hardwired up all in one unit.