Carver V is only tweaked if you used the files for that, IIRC. It will, however, always lack the slightly sadistic mission design of Exodus 2.0. I personally ended up doing some minor rework of several of the Exodus 2.0 missions in the editor to make it a bit more manageable, but as long as you give yourself enough cash in the start to buy a Dragon and an Assassin the remainder is doable with enough luck and skill. A lot of people played the thing and nobody ever outright sad "It's too hard, burn it all" though some of us did go into the game files and use the break tool on whatever we found most offensive.