Overtuned?

MF / Irelia feels very strong. Very very strong. I’m playing straight Shurima and it’s the only deck I fear. I’ve lost to other decks. But I’m not even sure what to do against her. Kill her sure they are able to deal so much damage so quick I just don’t have time. 
What is everyone else experience so far?

I experienced so far that Zilean does great work in P&Z and is a worthy chief inspector 

I faced a lot of Irelia Azirs more than Irelia MFs, and I think Irelia Azir is much better since they have more synergy. I think that MF Irelia and Azir Irelia lose pretty hard to deck with direct damage so it's not really a surprise that Mono Shurima would lose to it. Ezreal Draven is a pretty good counter, I think, if you want to counter that matchup specifically. Nasus Thresh is also a good deck to play into it. With these counters, I think they might land on tier 2/3 in the end.

I've been playing Yasuo Malphite, and with Solari Sunforger in it, and the moment I play it, their attacks become completely useless. On that note, Yasuo Malphite did much better than I expected as well, but I think that's because most of the decks I faced weren't fine-tuned. The deck relies pretty well on good draws as well; oftentimes, not having Yasuo will make it unwinnable, or not being able to level Malphite is pretty hard. It's probably not gonna be better than old Yasuo decks. Malphite might need a buff, but I think it's slightly too early to tell.

Zilean decks feel like it needs a bit more fine-tuning, but I've been running a Zilean Ezreal deck, and I'm kinda surprised by how well I did with it. However, the deck's power feels pretty hard carried by Merciless Hunter and the PnZ package. That said, Zilean never felt bad when I played him. I saw some people running Zilean Nasus, which I thought could replace Thresh. But I didn't really feel the difference outside of Merciless Hunter being just a nuts card in any deck it's being played.

I faced a couple of Taliyahs, and she is still as bad as before. However, she does fit into more decks than before, which is nice.

It's a good aggro deck nothing more.

Irelia MF is less consistent than Irelia Azir have bigger high rolls but also bigger low rolls.

there are counters specially involving Zilean, I tried a go hard deck but it's just not enough, after that I tried a vlad deck, people just rage quit when they queue into you with those Irelia decks..

also Fiora farms them.

Thresh Nasus? same, a lot of free slays.

I think it is par with Azir/Lucien. Very polarised matchups but also not your typical curve out aggro deck. If you are able to setup the big explosive turns it can blow out a lot decks but it is ultimately countered by a lot of the meta decks. 

Quote From DoubleSummon

Irelia MF is less consistent than Irelia Azir have bigger high rolls but also bigger low rolls.

there are counters specially involving Zilean, I tried a go hard deck but it's just not enough, after that I tried a vlad deck, people just rage quit when they queue into you with those Irelia decks..

also Fiora farms them.

Thresh Nasus? same, a lot of free slays.

I can confirm that mono-Fiora is like a free win against any Irelia deck. The only way Fiora loses is by not drawing Fiora on time, OR not drawing any of the 9 strike cards (Single Combat, Strafing Strike, Concerted Strike)

Azir / Irelia is definitely better than Azir / MF. 
I hope we get enough Fiora’s out there to eat their damn lunch. Although I’m starting to push some stalls or lose by a turn

Honestly, I'm pretty happy with the mini expansion thus far. Pushing Ionia as a tricky aggressive region, and giving Targon more of a landmark identity is really cool stuff. Not sure how Zillian is fairing but I'm really happy to see a  non aggressive two drop champ.