>>34323579Making it related to Cacnea would completely lessen it's appeal as it's quite a jump in terms of design and concept. Stone evolutions don't even change pokemon that drastically.
Besides, if your so uptight of having a completely unrelated cactus, why aren't you complaining about every rodent, bird, dog existing after the Rattata line, Pidgey line, Growlithe line, etc?
As long as the real world is biologically diverse, so can the world of pokemon.