For me, I don't mind having the hull plating details or things like that, but I would have wanted the design to look more "stepped back" from the TOS Enterprise. The NX-01 in the series just had some things about it that looked more 24th Century, as opposed to 22nd. I'm not saying it had to look like a dated model, but could have been made to look more primitive.
The isdue is the TOS ship is the oddball. You are never gonna look older than it withput looking super retro