It's too bad I'm inherently selfish and want to write about my Lavellans. But I think that's far less popular because people can't insert themselves into the fiction then, and I think self insertion is what a lot of fans crave. It's understandable, but I really just want to be like 'so let me tell you about what makes my Inquisitors so great please listen to me wait where are you going come back."
I've have the same urge when I've been writing. But I've managed to control myself in keeping it nondescript when it comes to Lavellan as I type it out, but vividly imagine it being my Tala while crafting it. I mean, I know it's about my Lavellan, really. In my head, that's what it all is. But I know that it's nice for others to insert their Lavellan into fics they read--I certainly tend to do the same when reading other people's stuff. So I try to keep it open, even though it's painful and I wanna be like "and then Solas loved Tala and only Tala, and this is exactly how she looked, and she was just the best". The struggle is real.
See, I'm one of those assholes who almost always strongly characterizes and defines the PC (except for some kmeme fills). Fanfiction is for you, and it's for fun. Readers are always great, and always appreciated, but at least for me, the writing turns out better when I just do whatever I damn well please
IMO it's also more interesting as a reader, having the PC be an actual character instead of a placeholder for my Lavellan. I know my Lavellan. I wanna see other people's characters!
See, I don't really have this impulse... Yes, I wrote one Solas/Lav fic and it was fine... But I want to write as Solas... I want to get under his skin, see what makes him tick and above all what he feels... Even though he might not know he's actually feeling it...
I found it really hard writing as Solas. Listening to DanaDuchy's compilation of DA:I banter helped a lot, though. So much of the character's subtleties are tied up in his banter with different companions.