I think a lot depends on what you are familiar with and prefer (admittedly not necessarily the same thing).
For any single organ, I prefer a conventional drawstop layout mostly because this is what I'm used to, and as it allows for a reasonably compact layout. Unfortunately, of course, the cost in solenoid drawstops and engraving would be significant for even a small organ and mind-blowingly expensive for a large one.
This is why I have so far gone for illuminated push switches (and have used the very low tech 'blu-tack' approach to changing organs).
It's not exactly pretty, but it sort of works ...
Eventually I'm sure that someone will come up with an affordable system using watch face sized e-paper technology, which would suit me well, but in the meantime I'm thinking I could use a version of Ken Spencer's launchpad overlay method.
I'm imagining A3 sized transparent film, printed overall in a suitable wood-grain effect with ungrained circles bearing the appropriate labels. These would hang on the fronts of the stop jambs.
Nick