I have done no testing with proxies or anything, so I could easily be mistaken, but my "second" impression as it were is actually worse than my first.
The one positive is something multiple people already disagree with me on in this thread: higher HP.
Not higher damage output or stronger effects, but higher HP
all around would be beneficial to the game; it gives the designers more wiggle room and helps slow down the pace of the game. If someone new to the boards is reading this, I have gone on at length about the pacing of this game being too fast for its own mechanics; we don't need stronger Evolutions, we don't need weaker Basics, we just need slower (when it comes to attacking for damage) Basics with those that Evolve focused on aiding set up and those that don't mostly just stuck sitting there for a turn or two. Tah-dah, now that card advantage you gain from running Basics becomes a matter of running additional cards to set up and you just don't have a speed advantage. No need to try and figure out how to design a Basic that hits hard ASAP with an Evolution that takes a turn or two to hit the field and yet are both roughly equal. Hard to believe now, but there was a time when we had the opposite problem
because of that approach: Basics were usually garbage and Evolutions dominated the game.
[. . .]
Oh, and the one positive I mention is marred because it is
only Pokémon-GX making the jump. We need
everything to make the jump, and since we aren't playing a single player game where we can grind for experience but are Benching and Evolving Pokémon during the match, that HP needs to be "front-loaded" onto the Evolving Basic Pokémon. Yes, this was the
short version.