ok how about you list a couple video games in which the M24 Chaffee has made appearances then?
That is not the piont. The point is that it should enhance the gameplay and the game itself. The USF has a great light tank, the stuart. The stuart has a great stun ability with which it can tackle a puma from the OKW faction and the 222
from the Ostheer faction.
If you give the m24 Chaffee to the USF, the Ostheer will get routed in the early game by not only the M5 quad or t70 rush, but also a stuart/m24 chaffee rush. What kind of light vehicle does the Ostheer have to fight this? The 222
? That is right none. The OKW can fight it off with the Puma, the Ostheer will get stomped into the ground.
Thus, Ostheer needs a potent light vehicle if the m24 chaffee is added, let's say a Panzer III with the shorter barreled 50 mm gun, so it can not only counter the m24 chaffee, but also the nuisance of an early t70, stuart and M5 quad.
Regarding the Pershing and the M24 Chaffee, I rather see the USF get a tank that can actually fight heavies than the M24 Chaffee. But hey, that is my two cents.