The reasons I suggest something like a 12 pin molex are low cost and speed.
(like 50¢- 80¢ each for 12 wire male / female plug/receiver housings, plus M/F terminal cost (? 10-20¢ x 24 ?)
If terminal strips for fast seperation were the "best"; you'd see it in other portable design but you don't; you see plugs. (lighting, stage, coin op cabnets, pinball and video game sections... all use fast assembly techniques and plugs between sections on equipment that seperate ) (I am thinking of one exception .... a pita it had so many terminal blocks, no plugs.)
Lehighlines top sections could have used the cheaper plugs to a big advantage for sure; the lower portion however has some extra wires on those terminals that would warrant keeping them. The plug set addition between terminal blocks still saves time though.