Do you not get access to mounted combat with the quests? I can't imagine doing Rohan quests without MC. Also, epic battles are a large amount of content and are fun initially, but they can get veeeeery repetitive. I have no idea if they're still useful for gearing, but I ended up buying Battle points from the cash shop on my mains just to avoid the grind for a couple of my class trait points. That was with me running well over a hundred Battles. Perhaps they're not as grindy now, but less grind doesn't seem to be the LOTRO way unfortunately.