To reiterate on another comment that would make no sense to Swedish speakers. Å is a distinct letter, with a different and unique vowel sound. It is in no way "a slightly different kind of A".
Your suggestion sounds a bit like spelling Apple like AIILE and using the circles to form a cool infinity symbol. Or something.
Also, the A is short for Agunnaryd, the founder's hometown. (IK is his initials, Ingvar Kamprad, and E is for Elmtaryd, his family farm.)