There is an option to change new rocket and sticky jumper skins to old ones, it's very simple, you just need to download this mod http://gamebanana.com/skins/147350 and follow the instructions given. I'm saying it because there are many players who don't like new skins.

To install the mod go to folder Steam -> steamapps -> common -> Team Fortress 2 -> tf -> custom and drag the file there

This can be added also as our in-game feature with possibilty to change between new and old looking. If you are interested please let us know in the comments :)