Well first of all, ME3 didn't flop. Its ending did, and that harmed the franchise, but the game was no DAII/SWTOR. ME3 also likely made the most money of any Mass Effect game, so I don't think the company itself is concerned about it being a more objective 'flop'.
If it's a ME3 type of situation, I personally wouldn't care. I'm not that much into DA anyway (so far).
If it's a DAII type of situation, then I'm very concerned. Again, it's not that I particularly care about DA, but DA is one of the major properties and if they can't handle it right..
If it's worse than a DAII situation, then my confidence in Bioware is significantly hit and I don't think I'd be able to be positive about them anymore. Still would have ME:N as a personal final chance I'd give them.
Current stance with any Bioware game is:
-No preorder for anything
-No Collectors edition for anything
-No launch date (or launch month) purchase of DA, but I'm up for it with the next Mass game
-Open to changing this based on certain or surprising reveals of what will be in either game, but still probably not getting DA:I itself ASAP
Before ME3 it was:
-Preorder Mass games ASAP, don't bother with DA
-Collectors Mass games ASAP, don't bother with DA
-Launch date for Mass, and happily buying at some point for DA (though DAII shook that up)
So yeah, I've went from BioDrone (lolwhatever) to critical but optimistic customer. Next two games will tell what I am next.