I like the first pic, but I don't care for the driver tube sockets sticking as they do when the output tube sockets are 'flush' with the deck. Not a 'deal-breaker'.....and I understand that you probably have them PC mounted unter the deck. BUT..... I just don't like the inconsistancy! I believe there are not people who are PC mounting output tube sockets on a board that screws to the bottom just like the driver board. So, if you were to adopt this technique as part of your design, 'yes!', you'd have two more PC boards to have to supply (one for each side). BUT..... with the quality of of today's boards, you'd make the kits themselves somewhat easier to construct, probably more reiiably built too since the wiring aspect of the output tube area would be controlled by the PC board..... AND, the tube sockets could all be equally protruding above the chassis deck. I know it's a petty comment, but seems like going through all the trouble to 'sub' mount the driver board (as opposed to 'open' mount it like in the OE Dynaco design), cut holes for tubes and sockets to make it all look 'neet', then to do the output sockets 'the old fashioned' way.....that just seems self-contradictory. Anyway, I much prefer the staggard look of the #1 pic!!
So, while I'm at it, I have to ask: Are there standard type OTs under the round covers that are just mounted below the deck and then also protruding up through and just finished off with that round cover? And finally, is the PT a torroid also mounted under the deck?