I can second this one. It would make things more interesting for them to use them, even if they are the older uniforms. Another option I can see is having a new uniform for them made, a new style as it were.
We all know what cryptic is gonna say---- "Too much work!!! Do you have ANY IDEA how hard it is to draw that!!!!! It'll take all my special devoted team YEARS working overtime and nights, with no holiday,s all away from there families and loved ones to draw or even cut and paste the uniforms on like that YOU HAVE NO IDEA!!"