As I understand it, you want the tank icons (not names) to switch, depending on wn8?
I imagine that it's possible, with some sort of script that scans player's wn8 and changes to directory where the game takes the icons from, for each tank.
But I would also think that it can be quite complicated to realize; not to mention that you need to make at least 6-9 new tank icons for each class (heavy, light, etc.) to begin with.
Depending on how much info you want in your playerspanel and how well-arranged you want to have it, there would be simpler solutions.
Can just have something like this:
with default icons even.
Or something along that line.
Personally, I prefer the icons as in the pic, white nick (both for better readability, since the red wn8 stuff just hurts my eyes tbh), winrate, wn8 and then maybe 1-2 more stats next to the name.
Really depends on your taste though, I guess.