Per MH there will be a confrontation about Rollo's apparent defection (again) next season. However, I really don't see a need for it. By giving Rollo a territory and income through taxes. He obligates him to protect him against all threats, but his plate will be full. Charles may have had a Duke or other satrap in the area already, but their are likely 50 - 100 barons or counts in the region that need to be put in check or subdued because there were no guaranteed revenue streams or military support for the crown. They were all fighting each other and every other bordering lordship. If you read any history of the times, Kings, dukes, etc. were constantly fighting internal rebellion as well as foreign wars. What he basically gave to Rollo was a license to go kick some ass, take over a territory and come when I call. For this you get my bad tempered daughter and all you can hold...as long as I get my cut...also again, come when I call. Especially against other Viks.
Rollo did. He spent the next 20 years kicking local barons asses, some Vikings and setup a mini-kingdom in Normandy. He supported who was on the throne when he felt like it. Cuz, what were they gonna do? Everyone's troops were always tied up fighting somewhere. As long as you maintained the revenue stream and helped out sometimes, you were considered loyal. In actuality, Rollo was an entrepeneur (sp?). Though he converted, one story relates that on his deathbed, he repudiated Christ and sacrificed all the preists of Rouen (his captial) to Odin. Great joke, huh.
I don't lurk as much as I used to and I NEVER listen. Comes from being old and cynical.