I guess Andika was put first, because it is a sans-serif font with a weight similar to Arial/Helvetica, our main text font (until we get our own design, which should be quite soon). Compare

_{The first line is Arial and the second line TeX Gyre Heros (to emulate Helvetica, which I don't have on this machine).}

I don't think we can blame the designers of Andika, because the "double-storey" a (U+0061 LATIN SMALL LETTER A) isn't specified to be double-storey, although many fonts do use a double-storey a. Moreover, the "single-storey" ɑ is actually not an A, but U+0251 LATIN SMALL LETTER ALPHA (whatever a Latin alpha is supposed to be...).

I would support a change that helps distinguish a and ɑ, but (hopefully) by the time this would get implemented, we already have a new body font. I assume the new design will use a sans-serif font (to pair with a Japanese Gothic font), but maybe it will be lighter, so that pairing with Gentium might actually look reasonably good:

_{This is Open Sans (as used on http://graphicdesign.stackexchange.com/)}

I guess Andika was put first, because it is a sans-serif font with a weight similar to Arial/Helvetica, our main text font (until we get our own design, which should be quite soon). Compare

_{The first line is Arial and the second line TeX Gyre Heros (to emulate Helvetica, which I don't have on this machine).}

I don't think we can blame the designers of Andika, because the "double-storey" a (U+0061 LATIN SMALL LETTER A) isn't specified to be double-storey, although many fonts do use a double-storey a. Moreover, the "single-storey" ɑ is actually not an A, but U+0251 LATIN SMALL LETTER ALPHA (whatever a Latin alpha is supposed to be...).

I would support a change that helps distinguish a and ɑ, but (hopefully) by the time this would get implemented, we already have a new body font. I assume the new design will use a sans-serif font (to pair with a Japanese Gothic font), but maybe it will be lighter, so that pairing with Gentium might actually look reasonably good:

_{This is Open Sans (as used on https://graphicdesign.stackexchange.com/)}