Ranged capability? Do your characters range anything ever that isn't a lever? Mine don't, except maybe plinking the dq a few times if the casters are particularly slow nuking her back to the platform the first time.
I'd accept the dex argument really if and only if the gb changes lead to 18/2 barb/rogue builds being better off thf: if you're not evading, those 3-4 reflex are not that big a deal.
The only reasons I see to put points in dexterity are max dex bonus of armor and twf. Unsurprisingly, nearly every other build does leave dex at 8.