"Official tournaments" are one of those things that doesn't affect average Pokemon fans, but I see your point.
As for the natures, trying to get a Pokemon with the right nature/ability was one of those things that I felt kept me from playing the actual game. And yes, I'm honestly telling you that thing about Alakazam because I never trained one. Natures always felt like (and still do) something that I had to research and not explore on my own through playing the game. I imagine this is a reasonable thing for a person to feel and would cause one to consider that upgrade to the formula a bit negligible.
As for abilities, I just felt that every electric type had static, ever fire type had flame body or flash fire, all bugs had compound eyes, and a handful of Pokemon had (then-)unique (to their evolutionary lines) abilities.