I also hate the PT droids, and have cut their voices as much as possible. You might have spotted a couple of ‘roger rogers’ removed from that clip already, and there’re more in the full episode. You do need to put up with their voices when they’re carrying important dialogue, but I’m getting rid of as much trash as possible.
There are audio editors, like Audacity, that can change the pitch of a sound without affecting the speed and vice versa (often used by guitar players for practice). Perhaps lowering the pitch by a few percent will make the battle droids sound less ‘cartooney’?