Yeah, I agree with you, 270 isn't as good as it was, but I think its important to consider as an absolute minimum.
That said I despise 252/252 as a spread, especially on a speed tier as common as Mences.I'd like to suggest 52 HP/252 Atk/204 Spd as an alternative for outspeeding all Hera whilst still retaining a degree of bulk. You're not really missing out on anything important in losing the speed anyway aside from speed ties with other Mence. Pretty straightforward and is superior to what we have imo.
edit- for some reason i had an immense brain fart and thought hera maxed out at 285 as opposed to 295, ignore the second paragraph of this
That said I despise 252/252 as a spread, especially on a speed tier as common as Mences.
edit- for some reason i had an immense brain fart and thought hera maxed out at 285 as opposed to 295, ignore the second paragraph of this