To answer your question, yes, the Lenco L75 is "still" desirable. Just go to Lenco Heaven and soak up the enthusiasm and the ever more creative ways in which guys have tweaked their L75s. There's no end to what you can do to it. Mine is in a 60-lb slate plinth, sitting in a PTP3 steel plate that immobilizes the whole assembly and is firmly affixed to the slate by bolts (see Peter Reinders on Lenco Heaven; he makes the PTP). It has a huge aftermarket bearing and spindle made in England, and the platter has been dampened to reduce ringing. The platter mat is a Boston Audio Mat1, my favorite, and the speed is controlled precisely by a Phoenix Engineering Eagle and Roadrunner. (Google is your friend.)
Total investment is about $1600; a little less than half of that was to pay for the Phoenix Engineering components, the most recent addition.
Peter Reinders also makes plinths out of Corian. So you can have plywood (from John Nantais and many others), slate (from OMA, although I had mine made for me by direct contact with slate companies), or Corian.