Getting back on topic here...
As a whole I think V4 was absolutely fine. Sure, a few visible things could use a bit of buttoning up, but coming from a guy who was completely new to monster truck sims, the physics seem alright to me, and it felt 10x better than whatever game Activision is putting out. I think, with a bit of tinkering here and there, V4.5 could be revived. Look at it this way too: current persions of trucks are being released daily, so it's almost as if V4.5 never died out, and it's slowly being filled, by the content makers who are making The Bad Habit 2013, and the current Grave Digger, and so on and so forth. If we kept getting newer versions of of single truck downloads, we would never have to release another full on pack again, just a bit of physics editing here and there.
Thoughts?