The Houses of Harkonnen and Ordos protested, but not too loudly, since neither house was above stealing anything they could to gain an advantage anyway. House Atreides didn't waste their time, since they knew the score, and frankly, for what they have lost, they have also gained. Well, I guess it's really the beginning, since this is where you take over, and play the mod. That's pretty much it. All infantry run pretty much the same speed.
Soldiers are all a little stronger too.
Since their is no Medic in Dune 2000, all infantry units will self-heal. Grenadiers can be built by all Houses. Sorry infantry lovers, but tanks still squish infantry. Missile Tanks no longer outshoot turrets. If an attacker wants to invade your base, he'll have to bring a lunch.