Don't get me wrong, I like a good Assault-class 'Mech as much as the next 'Mech-head... But this game is way more fun before you get too many of those behemoths. That period where you've got your first good heavy, but still have to drop with a light or two from time to time is my favourite.I agree. I also like working towards that next class up mech. It's very rewarding.
Perhaps because that way you get it all; the lumbering big stompy 'Mech feel of the heavy, and the speedy maneuvering of a light, with two solid trooper mediums in between. And you have to employ and adapt some actual tactics to win same-skull missions.