The Inquisitor isn't bland. They're just not as excessively - and often contrivedly - dramatic as most of Bioware's other protagonists. I can actually say something reasonable in a reasonable tone to someone, most of the time. I like that and don't want it to change.
Also, as I said: you can infuse a more neutral line with emotion, since emotion is invisible. But you can't take emotion out of a forcibly dramatic line. The Inquisitor was better for roleplaying than all other voiced protagonists Bioware has made.
Regardless of my opinion on the Inquisitor's dialogue, Nefla was responding to someone who did indeed think that style made the Inquisitor bland. As such, if Bioware reuses this style, that person will think the new protagonist is bland as well.
Personally, I would have liked to see how we could develop the Inquisitor in another game now that they are not a figurehead, have more agency, and a more personal story. What could have been, and all that.
Yeah, for me, dialogue and intonation aside, what made the Inquisitor less engaging for me was the fact that the majority of our actions didn't have real choice. Even if previous games didn't provide many choices, just the illusion of choice, I think they better hid our lack of agency. As has been pointed out, sidequests were just various ways to accept the quest, and then usually the Inquisitor had no reaction upon completion of the quest. So replaying those quests with a different Inquisitor doesn't provide much variation.
This doesn't apply to every quest, I know, judgements and companion quests did have more variety in this respect. But many of the quests didn't bother hiding our lack of choices.
Exactly. As far as the side-content goes (not main quests, judgements, or companion quests), everyone is basically playing the same game, which is sad in an RPG. Especially if it comprises the vast majority of the content in the game.
Though of course, there is variation in not accepting the quest at all.
A lot of the time though, you can't even do that in DA:I.