I like all of Bethesda's works, Skyrim wasn't as amazing as I thought it would be (The Main quest did disappoint me) but it was still an enjoyable game nonetheless.
People like mods, so doing a Let's Play /w Mods is usually better than doing a vanilla LP, you could also do Modded long questlines like the Elswyr mod or such forth. Its not an original idea but IMO its better than doing Vanilla Skyrim. You could also LP skyrim on the hardest difficulty, I forgot what it was but I remember when I tried it enemies take FOREVER to die so good luck.
You could also try making a machinima out of skyrim, Skyrim is a good platform for storytelling and you could do an LP but narrate your own character's thoughts and opininons, make a custom backstory etc. Its a bit of a nerdy idea but an idea nonetheless.
You could also set up epic battles and mess around with the placeatme code which lets you spawn any kind of NPC. I did have like 15 dragons over Whiterun at one point, was funny but it is trying on the computer of course.
Just some thoughts.