Quote: "There is a theory that makes complete sense, but does not answer all the questions."
If it does not answer all the questions, then it doesn't make complete sense.
Whatever its virtues as a theory it is incomplete at best.
Having run through the entire first thread that sprang up once the aircraft went missing, and having no few of my posts deleted as the mods tried very hard to herd cats in that thread ... nobody has explained to me the course change after last radio contact in a way that permits the fire story to make sense .. no less complete sense.
Making sense does not mean it must answer all questions. E=MC^2 makes complete sense, but doesn't answer the question why.
Everything that happened on that flight could fit into the electrical fire theory, but without further information, that theory can't answer why the fire started, or why the pilots chose one direction over another after they finally knew about the problem.
As for the course change, if the pilots became aware of the issue, they very likely would have chosen an airport which was closer than their intended destination. If you follow the course from their initial deviation there is a rather large airport on that course. It would be reasonable to expect them to put that direction into the autopilot - expecting it to work, and/or turned to that direction and trimmed the plane to stay relatively straight and level.
There are very simple logical possibilities for what happened. But no-one can answer all the questions, like why did it happen, which is what the families want to know. And until why it happened is known, the families will refuse to believe the simple logical possibilities.