Tactile switches is just a must (for those that know) when you're not gaming and use keyboard for typing, or anything else (new Lekker Tactile60 switch (silent)).
So instead of having to buy and use 2 different keyboards (60HE + another 75%+), and swap between them on your desk, either with same cable (unplugging/plugging), or with 2 different cables (and also taking more space on the desk) - you would just buy the 3-part Wooting keyboard with consistent style, easily swapping, snapping into place the smaller left part of the keyboard with Linear or Tactile switches installed (with the cable being in the middle of the keyboard, landing on the right side, not having to fiddle with it).
It's known that Wooting is lacking in Tactile switch department, for all other use than gaming, where many people prefer Tactile instead of Linear - so this would be a great way to bring a new Tactile HE switch (that wouldn't be that bad at gaming either, but most importantly being great for general use).
Faster swap all switches to Linear and vice versa (if you for some reason like all-Linear better).
Maybe there should be a cable slot on the left parts too, so you can have option to at any point removing the right part, using the left (Linear) part for gaming, for much better mouse space.
(Spacebars being 2.25u means you can much easier find 2.25u keycaps for them (especially blank Shift ones), there might also just follow a different style spacebar set with order)
(The 3 important "modifier keys" on both sides of bottom row being 1.25u, and not some awkward 1u, 1u, 1u on the right side that is common with 75% kbs)
(More centered ALT placements, better in general; better when gaming - reaching ALT with your thumb easier, especially for ESDF setup; easier ALT GR usage with ISO)
(featuring that special knob-switch w/ keycap, which you can swap to any other switch slot on kb)