>>37179159It all can be done by the game's basic mechanics such as stats and moves.
>>37179207That "third dimension" becomes completely pointless the instant that somebody gets a better ability. Or, in the example above, Dragonite became useless as soon as Aeriliate became a thing.
And ironically Aeriliate is the kind of ability that doesn't adds any strategic value besides "lawl more damage".
Diversity via learnsets and stats are much better than abilities, just compare DP's Dragonite and Salamence. One had Outrage and another had higher special. Suddenly both are perfectly viable and filled completely different roles despite being so similar.