Can you really make that claim on a card that some people (including myself) have 2 copies of already? Also, realistically, 3 Jinzo will be a thing eventually. No reason why it shouldn't be. It sees little play, and though it's decently strong, it would not even remotely be a problem at 3. I'd consider some people having less available copies than others more unbalanced than everyone having 3.
They know full well what they’re doing to players who don’t have the second copy as they created a mission specifically for those who had 0 Fire Princess to get the same 1 copy those who do have her to get it. It’s just being evil.
Even with full support wont be a problem, most of the decks rarely use traps + BoM and the other strong spells completely shuts down jinzo. I really want them to release the full card list. I love to make a deck around this archetpye. Good rogue deck material, but nothing more.
2400 in an era where everyone can special summon 2-3 monsters with 3000+ in one turn is just laughable. Duel links powerlevel has escalated way too fast for jinzo to have any chance today.