
Because one has to get to the end of the Prize Pass to unlock these rewards, I wonder how many players managed to play with the pre-nerfed version of these items. Yet, even without using them in the game, it's easy to understand why they acted quickly, as several look very good, and I'm talking about the post nerf items here.
First, let's start with the obvious, the freeze synergy is the focus on this item pack, as many items scale based on your ability to freeze. However, only two items, Cold Room and Ice Luge, two of the most severely nerfed items, have the ability to freeze. Then, this once again will specialize Pygmalien into a certain direction.
At the moment, the character is fairly flexible, able to build around Fixer Upper, a scaling weapon, medium sized weapons, or create some loops to trigger charge items (Yo-Yo, Matchbox). The addition of Frozen Assets could bring a new build, based around Freezing to gain Regeneration through Cold Room and Private Springs.


Both items are properties, meaning they have immediate synergies with existing Freeze items as well.



Compared to Vanessa, which had to look at its kit as support to already existing builds, Pygmalien gets to open a new building avenue. This alone makes it much more interesting, as the kit is raising the interest of items already in the base pool. It could mean adding 10 items actually makes more than 10 items a consideration for Pygmalien now. Cherry on top, Pygmalien is also more flexible than Vanessa in how it builds. For example, although they have obvious synergies, Fixer Upper or Dog are able to carry their build if you raise their value or damage enough, opening for various supporting casts around them.
On top of this new avenue, Pygmalien also gains some new synergies for existing build.

Sauna looks like a decent support item if you have Matchbox in your build. More Health and Regeneration is perfect for slow items with a huge damage count, something Pygmalien tends to do rather often. We can also use this as a counter to Poison builds in a Fixer Upper strategy.

This is a very slow, but in this enchantment based metagame, increasing the value of a property often correlate with making it much stronger. I doubt we would keep this in our final build, but it is a great placeholder until we find how to perfectly use our 10 slots, on top of a fine swap for PvE encounters we know we'll win.
Conclusion
Due to the lack of a Lobby and specific opponents, The Bazaar entices us to aim for the strongest build possible most of the time, with the possibility to flex certain items against specific heroes. In that context, the item kit Frozen Assets for Pygmalien feels pretty great. Indeed, the 10 additional items open a new build, which raises the value of already existing items on top of synergizing with existing ones.
For all these reasons, I would consider the Prize Pass for a Pygmalien player, but likely would pass if I was playing Vanessa. We already know there will be more item kits in the future, and we can only use one per run. Obviously, there will be a metagame that will make us miss this Aquatic kit eventually, but on average, I think I'm fine playing with the base pool until more options come around.