As it currently stands, the 2409 combadge is quite large and bulky compared to its 24th century counterparts. I feel that they could be shrunk down a bit. An edit of the design closer to the very sleek Collector's Edition pin as seenhere would be preferable IMO, but I know that that is way too small to be well visible on a character.
I'd just like something with that flatter, smaller, more subtle style. I realize STO is Star Trek game and not a Star Trek simulator, but I feel this could help reinforce the feeling of being in the advanced year of 2409, having the combadge at least match the size of its predecessors.