Boon, are you a realistic imperialist, or are you just trying to steal CWAS's shtick?
I view imperialism as a tool that can and should be used at the right time and moment and for the right reasons.
Cultural imperialism is typically the most acceptable form of imperialism imo. One example of this would be the attempt to purge the Southern USA of Confederate culture and replace it with Yankee culture. Surely, a failed attempt, but a noble one at any rate.
When imperialism benefits the population being conquered it can be seen as noble and thus, moral. At least, that is my opinion.