My Elder Scrolls senses are tingling!
I can safely say that the entire Elder Scrolls universe has some fantastic, and wacky lore in the setting. It's actually a shame 80% of it is given through in-game books (with stories, not just straight up codexes) because most players don't bother picking them up unless they're skill books.
I've been going back and forth between ESO and DA lately as well! I have a werewolf Bosmer "dragon knight" and an Argonian sorcerer that I've finished the main story with, and I just started up an Argonian dragon knight (for the hilarity of plant people spitting fire), and an Imperial nightblade.
I love the Elder Scrolls stories. They're usually quite entertaining. Part of the reason I take a while to play through most RPGs is I tend to read everything (or close to it). 
It's fun in that series as well as DA where there's a whole bunch of lore and history and context in documents. I've been replaying DA2 on and off recently and it's funny how many ways Inquisition was set up in codexes and other smaller ways. Obviously, certain overarching plots like the mage-templar conflict, and characters were much larger ties.
As for the Cullen romance, I've had my issues with Cullen, really disliking him initially (he was traumatized in Origins which I get, but no, killing all the mages isn't an option, Cullen), though in Inquisition I do find him sweet and charming. I thought I'd maybe go for Sera or Cullen but I just wait to see who draws me in and we all know how that ended up.
I am not really a fan of rivalmances, but I am no stranger to pain after Anders and Solas. Even though the whole Anders thing came complete with red flags from the start, there was still a friendmance amid the trouble. In my replay I keep thinking I should go for Merrill, finally, (I do love Merrill), but damn it if I've had Hawke flirting with Anders again.

I've also got a second DAI playthrough and another Solas romance so uh, my LIs often ruin me for other LIs.