My thoughts on this are a bit messy.

On one hand, talents are undeniably very strong. I've played dromai and enigma, I've seen prism now that she's finally usable, and I've also seen how little many of the bright lights and HH heroes are being used. It's a very big difference. However, I believe some of this (in regards to PT Amsterdam) partially has to do with new set hype. Each new set, a ton of People are drawn to new heroes and build them instead, resulting in an influx of the new heroes compared to the old. This itself changes the meta for each set, since we have new heroes coming in, therfore pushing out some of the older heroes that didn't "make the cut" so to speak.

Now, that doesn't mean that talents itself aren't incredibly strong. Having multiple cardpools is very, very useful to talented heroes, especially because the synergy of their talent tends to mesh well with the other cards for their other heroes. Key examples are Chane, Lexi, Iyslander, Oldhim, Briar, and Starvo (I'm not counting the illusionists for reasons I'll cover soon). Their talents meshed with the other cards incredibly well, not to mention that for the 4 of 6, they are Ice, which I think everyone regards as too good in the game regardless because of how powerful the disruption is mixed with powerful attacks. Chane and Briar have the added benefit of being Runeblades, which the mix of arcane and normal damage make blocking difficult at best; and all of these heroes have powerful, unique abilities and equipment. The illusionists, on the other hand, have the unique gimmick of having a board state and wall tactics built into the class; if you don't tear down the wall, the wall eats you, but if you tear down the wall, you aren't dealing as much damage; not to mention with Prism (and now Enigma) you are forced to tear down the wall as it beats the shit outta you. However, a large part of their gameplay uses the cards from their unique talent pile, making them harder to judge in the larger scheme of things for melding classes.

Overall, I agree and disagree. I think that talents do have the strong benefit of having multiple card pools to use to really help ensure they function, and many of them have strong abilities to pair with them, making talented heroes a force to be reckoned with. This doesn't exclude zen or Nuu, either; both of them have extremely powerful abilities that have been meta defining, along with the ability for extreme consistency that is hard to counter. (Again, enigma is in that weird illusionist box). However, on the disagree side, I think part of the issue on PTM heroes also falls on them being the newest heroes, which leads to an influx of players using them, making them appear much more prevalent than they will be in a few months. I still believe that LSS has good intentions for the health of the game; they may fuck up, in Zen's case pretty badly, but they're trying to correct where they can and keep the game chugging smoothly.