Character imbalance is never "healthy". Yes, the melee metagame evolved extremely well for the top 8-10 characters. But would the metagame be better if the gutter trash tier wasn't so far behind the best? I'm inclined to think that it would. The grand final matches wouldn't be as fluidly perfect as they are now, but a greater variety of matches allows for more depth. And as much as people think a low tier hero could theoretically win a major, it would happen only if the skill difference is absurdly big between the two players. Unless there's some undiscovered untapped potential in that particular low tier. Considering the game is roughly 12 years old, most of it has been discovered, and what remains to be found won't make Pichu or any other bottom tier skyrocket his way to top.
As good a the Pichu player can do, the Fox player can "lel shine get rekt scrub" his way to victory. Because Pichu is fundamentally terrible and has minimal tools to help him squeeze a win, other than the effect of surprise from picking Pichu.
As good a the Pichu player can do, the Fox player can "lel shine get rekt scrub" his way to victory. Because Pichu is fundamentally terrible and has minimal tools to help him squeeze a win, other than the effect of surprise from picking Pichu.