So I patched up Lord of the Rings Online recently and did a few skirmishes. Still enjoyable.
BUT...it goes nowhere. You've accomplished nothing but a progression on your XP bar.
I think what would be cool is if it randomised up a campaign structure, where you do skirmishes in order to advance down the campaign, maybe with some big bonus at the end of the campaign. So it feels like your working at something that you can complete only via skirmishes. Kind of makes skirmishes their own little world, that way, instead of just one way you could get XP.