Just recently been to Estonia, and, to be fair, their punk scene is right now almost non-existant. Surprisingly, the few punks they have are more interested in activism than playing music.
I tried looking for some Estonian punk to give as gifts back home and the only record I was ever advised at a store was some mellow def-leppard-kinda-rock shit.
I'm really amazed you have 13 hours worth of Estonian punk.
If the Scandinavian Punk/HC you mention is Finnish/Swedish/Norwegian d-beat kinda bands - I doubt you'll find stuff like that coming from Estonia
Besides JMKE, there is a band i heard called Propeller - allegedly, "the first punk band in USSR" - but it sounds like glam rock

I just checked a Russian punk forum where few inhabitants drool over all kind of wierd rare shit from Europe (and especially, Scandinavian countries) - Propeller is the only band ever mentioned (because JMKE is pretty self-explanatory)