You can, but not a lot of people are actually willing to put that much effort.

At the end of the day, you can't eliminate ghosting entirely but you can make it a lot harder for about 90% of the people who do it.

as long as the timer isnt ridiculus like in WAR....

it's more the case of free accounts make it easy to do so.

True but you cant stop people from having multiple account free or not...

Oi, Kaptin Baddruk tinkin dis be good. Weze be getting all the inexperienced runty orksies to use as cannon fodder. As orks weze be needin them numba's to fight a propa WAAAGGHHHH! Us bigger stronger orks can walk on in behind tha fodder to stomp them oomies 'ard!