Thank you everyone!
On the length, these are actually 1mm shorter then the Precise Simplicity and several MM shorter then the PrecisePlus was in their corresponding sizes. The length is what it is by design to increase what Super-T feels is critical engineering areas. For example, we could go with a shorter switch, but this would lead to a switch that may not be as smooth or make as good a contact. A mechanical switch works via friction with the sidewall, if I shorten the length of that switch, it will have less contact area with the supporting bore it rides up and down in which will increase the tendency for it to tilt minutely which increase's friction, a longer bore gives more stability to the button as it travels up and down as well as increased contact area to complete the ground.
Same goes with the top cap, we could design a shorter center post, but again, the center post is held in via a pressed in delrin insulator, having a shorter center post would mean increased chance of leakage(it seals via friction with the delrin it screws through), and most critically shorten the pressed in delrin insert, which would mean less holding area and a larger tendency for that press in piece to come loose (with the current length which is the same part number as the Simplicity, we've only ever had 2 come loose on people since they came out over a year ago).
Reliability and long term durability our are main goals when designing a mod.