I disagree: Alleria is not good due to gaiessoul but due to his souls and the way his open set it up.
once you killed a lvl1 out of 3 on the field and pom worked you basically lost. Rushes will bee massacred by the next 2 gafcs, and if they dont dont attack they will be massacred by buffed proxy. gaissoul is not even needed he could play an other lvl4 unit.
POM has been always very good with refess decks easy to setup due to agressive lvl1s (and auto win vs falkow). the sp advantage you get by activating the 1st 3 soulskills is so strong that you dont even need myffres sp gen (yet having in the deck).
This shows: given the sp gen potentials of soulskills, refess had never issues with sp gen at all.They just didnt used them.
And Emki started to play a new deck type having most cards for it. When a new deck type comes out half of the community dont know how to fight the deck + gowen has been very rare at that time. + new jewel open helped a bit too.
The comeback of Urgant decks is due to the discovery they perform well with conditional 3sp gen first SS. No you cannot blame lyria ss for that. you can setup urgant with pom too and pom has been there all the time already.
Soo is MD defective OP now?
Was jewel nerf justified at all?
I dont know the 2 others but I can explain 3 top RP decks partially/ mainly with their opening set. We all have been very uncreative with opening sets in the past and we can see what that rigidness is leading to.