>>19186186Guts would make it shit. The sort of nerf that Lucario needs isnt a traditional sort of nerf. Lucario's so dangerous because of how unpredictable it is.. it's strength was amazing, yes, but comparitively it's not that much different than others, and is actually weaker than the likes of Charizard Y and what not.
The issue is that once you figure out what sort of set it is, you're already at a severe disadvantage. It needs something metagamey to happen to deal with it in order to keep it good but not unbalanced. It needs more natural threats like Zapdos' and Landorus-T's.
The best alternative I can think of to that is to knock both of it's offensive stats down 5-10 points and put them in Def or something. I'm not confident that'd help it much, though.
>>19185985That matters so little. If it's an offensively oriented pokemon, it's typing is more important for offensive coverage, not defensive capability. If youre trying to sweep, youre not trying to take hits anyway, so whats the point of giving a sweeper an ability like that?
Also, that ability would hardly make a difference with it's defensive performance anyway. It'd still be 2x weak to Ice, and a resistance to Fire on an already frail pokemon.