Ideas for a diy attempt of a transient shaper (maybe combined with a compressor) as a rack unit ?

Hey to the forum !

I already went with it to groupdiy but thought the more space covered the better !

Does anyone of you know of a diy project to build a transient shaper ?
Maybe combined with a compressor (but not necessarily so) like the : https://www.tegeler.com/Magnetismus2/Index

There are a few interesting plugins too that could be a inspiration like the : https://www.bozdigitallabs.com/product/transgressor-2/ for example

Maybe there are pcbs around for already existing projects or anybody has a brilliant idea here how it could be made OR already thought about it but it never got reality
Lets see that !

All the best !