First of all this is a really nice cosmetic/skin, that would be really nice as a addon to the game. The Hologram HUD could work well as a rare cosmetic item found in one of the create series for an example. To spice it even more you could make a Holografic Sentery, Dispenser & Telerporters as well just to make a compleat kit. It would be a exremely nice cosmetic/skin for the both the PDA and Engineer kit. Plus in fact that would increase the value of the reskin item extremely.

Personally i would really like to see something like this for the engineer, I give you my vote and thumbs up. //Mr.Paffalon