Re: Traditional Aikido? Iwama Aikido?
In my experience, "traditional" is generally one of those words that means whatever the person saying it wants it to mean. Calling one's methods "traditional" (in anything, not just the martial arts) is a weaselly way of trying to lend them an air of authenticity without going to the trouble of really explaining their origins.
Be skeptical of vague terms. People who mean Hombu aikido will say "Hombu aikido". People who mean pre-War aikido will say "pre-war aikido". People who mean Iwama aikido will say "Iwama aikido". People who just want to sound nice will say "traditional aikido".