Any SSR is always good! Until a SSSR+ or MR or USR comes out lol. Lets hope it doesnt come to that. If it does, means its time to quit the game lol.
Actually, if they did this while introducing and ramping up the difficulty for higher tier combat, I think it'd add longevity to the game, all while keeping things attainable for f2p players, as this thread is an example of.
Unlike games like Fantasica, where without the highest tier cards, you couldn't do squat, especially in a rankings-style reward system.