NPCs always caling my character beautiful felt odd because they weren't reacting to something that exists in-game. I could've made the ugliest Warden in creation and they'd still think she's gorgeous. I prefered them to react to dialogue (e.g if you pick something humorous and they like it, they might say you're funny). I don't mind with an LI.
I'm not a fan of jealousy at all. Especially when the LI decides they're going to speak for you.
I'd be interested in characters initiating the flirting again, provided we get decent options to reply. I liked it when Zevran did, because it fit his character and there were a range of replies to choose from. We could let him down gently. When Anders flirted, the reply options were basically "Hell yes!" or "Hell no!" with no "Let's just be friends" option. It would've been fun for Isabela to initiate flirting, since that would fit her character very well.
I like the idea of camping nights. In future, if they brought it back and had companions actually doing something, that would be great. Sharpening weapons, cooking dinner, chatting to each other, etc.
I never chatted to companions in the world, tbh. I played this game after ME1, so I thought it was like that, where you only talked to them back at the hub. I would like to be able to click on them and hear their immediate thoughts on our location/situation though (DA2 style).
The gifts/pranks were fun. I'd love it if we could give them to a companion and get a line of reaction dialogue. I really wanted to know Zev's opinion on that chastity belt. 