You're lucky no one plays ichorid! ^^ I've briefly considered the decks i've to face sunday and prefer to bring my dear landstill. However, this the deck is bent towards an interesting direction, so I'll keep up from time to time. Things I don't understand of your list.
-3 hierarch? I believe mana acceleration is too good, imho cut a land and add another one of this guy. It somehow sucks in multiple, but if you play it you absolutely want one in your opening hand, otherwise it's useless if it begins to help you in mid game. If you run hierarch, i think your first turn play would be him, period. And daze aterwards. Since you want to put early pressure, early hierarch is what you want. Playing 3 in no-sense, pardon me. This guy is a 4-of or nothing, just because you need to cast it t1 just like your beloved mongoose. Mid game it shines for his exalted ability, but if you wanted only that you'd have played another pridemage and maybe dauntless escort.
- coatl: isn't monk that better? i see it growing larger only under the good wing of counterbalance, as a topdeck he' good only if you have an exalted selkie attacking, which could mean that with his drawings you'd have better drew counters and removals than a creature that has to start it all over. However, I'm personally not a fan of it, but I tested it very briefly, so it's just a question to know how you felle about it. Maybe those 3 slots are better spent on removals or stuff (jitte, path to exile, oblivion ring).
-sb: how can only 2x MM help against anything...
I run to the station, bye!

