Manitunc et al, I believe it is the square escutcheon that surrounds the platter and is part of the chassis that will get in the way, not the platter. The square also makes mounting of many tonearms with side pillars to adjust VTA difficult, awkward, or impossible. These include Triplanar, Talea, Reed, etc. That escutcheon is the best reason I know of to remove the motor from the chassis and mount it directly into a plinth.
Platter is not really over-size. It's pretty standard.
Platter is not really over-size. It's pretty standard.