Thank you for commenting!

Yes, many players will opt in to having a level 8 max card (that's the whole point since even diamond and championship players will want them for bronze, silver and gold tournaments) -- but where did you get the 10 combined cards? The number of cards is identical to the normal number of cards (the only difference is that I had to interpolate for the rarer cards). Are you perhaps mistaking the ability gain chart for the card cost chart?

Also, once a player wants to competitively play diamond and above, the reduced physical characteristics will make the force-grown cards unplayable (remember that they have the only the normal speed, armor and health for their level -- I've added a chart with the interpolations for rarer monsters -- MINUS random subtractions for being force-grown). They will simply not be able to compete at the highest levels and players will need to grow a new non-force-grown monster/hybrid from scratch (basically a level 8/6/5 card sink for common/rare/epic and 8 or 9 cards for legendary).