I am using ROTanks and there is a diameter selection option in PAW that has a variety of diameter presets. These are extremely helpful for setting the sizes of ROTanks very quickly.
Currently, I am using the 8 foot preset to make an ersatz-Thor core. However, this is not a "common" snap that Procedural Parts/Fairings has (metric vs imperial). As a result, if I want to use any Procedural Parts/Fairings for the core, I have to keep copy-pasting the 8-foot diameter value, in meters, into the Procedural Parts PAW to get them aligned.
For me, this is a major annoyance when building.
I would like to see all Procedural Parts/Fairings parts to have the ROTanks diameter selection option in its PAW as well.