My last post fell into oblivion before this thread was prompted by today's news, so here goes again...
Effron is cool and all, but I think the point some posters are making, is that whomever ends up playing Dick has to be able to sell the "tough" part of it. Grayson might be upbeat and charismatic and all of that (and he is), but he's a tough guy; you don't get to deal (and succeed) with Gotham's criminals on a daily basis if you're not the toughest guy around, and being ripped and muscular doesn't (necessarily) make you tough, it makes you fit. An underwear model does not a fighter make.
This isn't a jab at Effron, Dick Grayson is one of my favorite characters and this is the same reason why I wouldn't want Armie Hammer as Grayson, he doesn't have that "tough" look; let me use another example: Tom Hardy, objectively speaking, if you just look at a picture of him and know nothing about, specially when he was younger, he has very soft features, he'd be even considered a "pretty guy", but there's no denying that he has that tough look about him, like he'd get in a street fight and come out on top; not saying I want Hardy as Grayson, that's just how I personally envision Dick Grayson.
Just my humble opinion, of course.

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