I wrote the thing a long time ago, got bored of the project and eventually deleted it because none of my friends were interested in the plugin at the end of the day. Maybe when people are interested in it I'll look back into it. None of the stuff ThisLD has is hard to do... And none of the expert MvM players I know of want them which is why I don't bother ripping off their work.
MvM randomizer with custom upgrades station is what most of my friends want atm.