Re: Mixing Aikido with other martial arts
If someone designed a course around specific techniques geared toward self defense based on the options as a whole that aikido provides, I could see that working for short term self defense. It wouldn't be very fancy, and I don't think it would stand up to stress testing by say, proffessional grapplers, but it could cover some basic points that would be helpfull in the average encounter. If there is an average encounter. I would likely want to include the kind of stress testing you see in the model mugging programs or something similar.
But aikido as it is commonly taught...I would have to point someone elsewhere for a basic 3 month self defense course.