From your words alone, it sounds a bit... I dunno. But good isn't one of the words that spring to mind.
It's FE8. It's not exactly hard. Adding more promotion gains + Increased growths is a bit much in my opinion.
Plus quite a few of the tiers don't make too much sense/are rather silly. Or at least that's what I think.
Still, a hack is a hack. May as well go for it, no?