Dont be too hastey, In beta2 we had no signs other than adverts, the signs introduced in beta3 seem to me a little basic and were possibley rushed, I would not be suprised if there are more, higher quality signs in the final release.
Thats not to say we dont need more signs and sign packs, the tmx ones in particular a very good. Just wait 2 weeks and see what is in the fianl game and what quality and style they are before creating sign packs.