Tube Integrateds...why not a preout for subs.....

Many tube integrated amps have sub out.
Manley Stingray has them, I believe most Jolidas do.
I guess the question is what tube amps have you looked at that don't?

A lot of good subs use a high level input that comes off the speaker binding posts, so maybe you don't need a dedicated sub output.

Indeed + descent phono section preferably with 2 gain settings for MM/MC, tape loops and descent headphone jack.

I believe that the Grant Fidelity tube integrated has pre outs, but I hear you in general. I'd also suggest speaker level inputs, particularly RELs. This is their recommended connection and RELs integrate very nicely via their Speakon to speaker output connections.

A point of the REL "high level" input (from the amp's speaker posts) is to use the tone of the amp itself (a good, although maybe not all that important idea). So I second the REL suggestions (I use one with a Jolida amp...works brilliantly). Also, I've been using Neutrik Speakon plugs for years and they're very cool, and should be used in more hifi gear...stuck an angled one on my REL so it can sit close to a wall without the dreaded "cable claustrophobia" issue (also use an AQ angled iec adapter for the ac cable).