Completely new to these boards. Only joined to say how much I enjoy the hack and that I've been playing the crap out of it. Had a couple different questions and some balance notes.
It's been forever since I played the base game so I dont know if theres something similar there that it's based off of, but is the Professors challenge machine intended just to try out new decks in a gauntlet format, not to give any sort of prize for reaching X wins in a row streak? Also, have collected about 4,000 total cards and still for the life of me cannot collect D25 Kabuto or D46 Blissey out of the Laboratory set. I've just been bullying Joseph in the Science gym to get more of those packs and have yet to see either. Is this just insanely bad luck or am I missing something?
I do agree with what an above poster said about Crobat feeling very strong right now. The double poison let's you win a lot of matches you shouldnt have otherwise, especially against high HP mons. My biggest concern is that it's a 0 retreat cost. Thematically it fits Crobat's speed, but it doesnt get punished by poison at all for it. Once Crobat gets a knockout or two, and your opponent starts putting in pokemon with 1 energy only on them the only real chance they would have to come back is to whittle it down with poison over time. But you can switch freely out to your bench, and if you pair it with a line like Hoppip-Jumpluff who also have 0 retreat cost, you can just switch it back in for free as well.
Ultimately the deck I'm using to farm cards is based on Zubat, Hoppip, Oddish and then using Master Ball and Pokemon Breeder to try and get an early Stage 2 evolution out as they all take only 2 energies, so you can be running them as early as your 2nd turn if you get a bit lucky with your hand.
Overall though I love the hack. Old school pokemon tcg brings back a lot of nostalgia, so I definitely appreciate th ee's time and effort you put into this project!