Why are people being so pessimistic about Varric?
Look at it this way; People wanted to romance Anders in Awakening, but couldn't - but he became a LI in DAII
Yeah, after they changed his personality so much that the reason people fell for him in the first place was gone.
Went from a cheerful, laid-back, snarky, funny jester to an angry, brooding, homeless, angsty, woa-is-me-and-all-mages whiner with a split personality in Justice, a dangerous streak with his violent outbursts, and an obsessive streak in everything he does. (Even his romance with Hawke is filled with obsession.)
In the case of Varric, he looks pretty shell-shocked in some of the clips we've seen him in, so some fear we might not get the Varric we love back. The writers have hinted that Bianca is a real person who isn't completely gone from his life, so some have speculated that he might not be available at all, or if he is then there's going to be a lot of melodrama and heartache on account of her. And some worry that he might be race-gated since he's expressed interest in only female dwarves before, and specifically told Hawke "too bad I'm not into humans."
So, there's a lot to be worried about. People fell in love with Varric in DA2, and are afraid that'll change too much, too completely.