Essential but missing
1. Clamps near the center of the table.

Hmm, maybe a track down the center to allow for a clamp and any place?

Not a good idea. I don't want to end up accidentally drilling holes in the
center mounted T-track. I'm in the "thinking-designing" phase and will come
up with something or find a website that already had the great idea. It
amazes me how many drill press tables slap T-track around the periphery -
useless in my opinion. Also some of the drill press fences are festooned
with T-track. I see it on a table saw or router table where you are moving
wood past the cutter, but a drill press????

what I have now is a mill-drill. it has a large cast iron table with T
slots milled into it- the table is about half taken up with slots. it
allows positioning clamps, fences, dogs and whatnot anywhere on the
table. very convenient.