I agree completely, I'm sick of everyone's questions to the devs being "IS X CHARACTER COMING BACK OMG!" I hated almost all the cameos in DA2 except for Leliana's, her appearance made total sense to me and it felt believable. Nathaniel felt appropriate as well because the Wardens are clearly up to shady business. I didn't really care for Bodhan and Sandal's appearance because why would they be there? I can accept them however because their more like an Easter Egg now. However I hated almost all the other Cameos, ALL Alistair cameos, Zeveran, those random characters from random quests from DAO, and CULLEN! YES! I DIDNT LIKE CULLEN! Why? because he was absolutely out of character from DAO, he was bat **** crazy and hated mages by the end of DAO. Now suddenly hes all merciful and totally ok for active duty? I don't think so. Also dont even get me started on Anders, he should have never returned in the first place. All of these things felt like they were nothing more than "HEY GUYS REMEMBER ME!?!?!?! HUH HUH??"
I agree there should only be Cameo's when they make sense, and when they have legitimate reasons for being there. Leliana being around makes sense, shes a big time player in the world now, same for Cassandra, who herself is the Hero of Orlais. King Alistair and/or Anora appearing might make sense when in Ferelden, depending on the situation, at the very least letters or something from them. Like-wise Arishok (Sten) appearing would make sense if dealing with Par Vollen. Loghain -might- make sense given the fact he was sent to Montsamard, although I'll never know...I never spare that traitor. (well sometimes, but he dies either way

) Varric being a party member again? I must admit I am disappointed. Yes Varric was the only Companion in DA2 that I liked, but I don't want repeat party members unless it's like some epic s***storm...like Inquisitor, Warden, Hawke all in the same party battling The Maker to save Thedas. it goes back to the whole "small world" thing. Thedas is huge, but these return appearances make it feel so damn small. Unless Varric can shed some light on the fate of Hawke I fear I'll have little use for him.