Well first of all, Dragon Age had save transfers before the Keep. Second of all I would call the save transfer a general practice Bioware adopted, not a franchise specific bit of dogma chiseled on stone tablets and enshrined next to the coffee machine. Choices mattering predates that, even before save transfers. KOTOR 2 had the chance to define some basic facts of the previous games' protagonist, even if it mostly affected flavor dialogue (Though one could argue that's what most of Mass Effect's "impact" amounts to as well).
You know what else got left behind? Shepard, the Reapers, the entire central conflict of the franchise, all gone. What happening here is a fundamental shift in the franchise, no matter where it's set. The franchise is changing. We don't know for sure what's changing, but in light of the corner they wrote themselves into and the baggage the choice import system has accrued over the years, it's insane to rule out a clean slate as a viable option.
So I take it you don't see the hypocrisy in saying I'm entitled to my position while calling me irate and crazy for doing so?
What's insane is your insistence on ignoring the corner Bioware wrote themselves into. What's insane is your belief that choices don't matter unless their reflected in the sequel. I don't really find anything rational about your position.
DAII imported very few choices as the events of DAO were largely irrelevant. Outside of Alistair showing up for a cameo, it's very different from the significant impact save imports in Mass Effect have. You can spin it however you like, but Mass Effect was the first game to start save importing.
KotOR II isn't even made by BioWare. It's made by Obsidian Entertainment, which is completely irrelevant to this discussion. We are focused on BioWare's practices.
It's insane to believe a "clean slate" is the only way to move forward. Do you realize how ridiculous it sounds to essentially reboot what is one of the most popular franchises in gaming because BioWare allegedly "wrote themselves into a corner"?
Everybody is entitled to their opinion, regardless of how ill-informed, misguided, or ridiculous it may be. Being entitled to an opinion in no way bolsters the credibility of that claim.
You keep referencing this hypothetical "corner" that BioWare has written itself into. I don't believe BioWare has ever made such a claim or statement. I believe that's an assumption some members of the community have made based off what they have observed and understood about the Shepard trilogy. On the contrary, I believe it's insane to have as little faith as you do in BioWare's writing capacity and not being able to see they would have thoroughly considered future options for the franchise before ME3 was released.
In fact, if you have so little faith in BioWare's writing, why are you even here? That is the foundation of every game they make... I don't ever believe I claimed "choices don't matter unless their [sic] reflected in the sequel." That's your own imagining of my position. What I have said is that choice should matter. Period. This has been the case with every Mass Effect game. The fact you believe I'm "insane" for wanting BioWare to continue a tradition really says a lot about you. Do you know what the definition of insanity is?