If you deviate too far from this then your deck will suck! I will say this right now, Ignore those people
Considering both the structure and the collectability of the Quarter Century Stampede set, I think the most sensible approach would be to secure one or two booster boxes prior to release and then decide on the next steps basing on your main goal and on the final card list
The game is a board game like any other, such as, Sorry, Monopoly, Clue, etc
The non-foil card is a Legend Membership promo (basically the original Player Rewards), and although it is extremely rare, its not as expensive as the judge foil version
Also, Froslass GL can do 50 for one energy and an Energy Gain to a sleeping or poisoned Pokmon with its Wake-Up Slap attack