Wait for DLC? Thats what I am currently doing, I'm still playing though, sneak plus illusion is way fun!
Yeh this is what i find myself doing, but that is still going to be a while away :/
^This. Exactly.
From the sounds of it OP, you are playing hot and heavy through the quests that interest you. There is a lot in this game to do that has nothing to do with quests. So, if you enjoy playing Skyrim and are bored with the quests then I would suggest doing things that are not quest related. I have been playing my first character for well over 150 hours and I haven't even been to all the major towns yet. Actually, even though I role play as a master blacksmith yesterday was the first time that I had ever even seen the forge in Windhelm. But, that's just part of how I play. I don't go into every cave as I find it, and I don't explore every city right away. I leave things to be done at a later time and it has really paid off for me.
OP, have you explored the whole map? Have you found all the treasure (talking about the treasure that has treasure maps)? Have you spent any time swimming? Have you ever considered hunting animals with your bare hands? Have you started any serious collections of odd or interesting items?
Im not rushing at all, i spent hours yesterday clearing 3 iron mines, transmuting all to gold, making jewelry, enchanting then traveling to all the npcs in the land willing to buy.... took me absolutly ages

I try doing those things, walking everywhere, entering dungeons as i find them, but find myself getting bored and heading back to riften/dawnstar to do jobs for the guilds, i was mainly asking if there was any quest strands i hadnt seen/heard about that were worth doing, but ill research the treasure maps, they sound interesting