Why not positional variation?

[Stefan Wirtz_2]

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I know for certain long time users of this forum already know Emma May Smith has previously delved in a similar topic on her hypothesis of a and y equivalence, but I'll leave it here just in case: You are not allowed to view links. Register or Login to view.
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Intending to answer to the thread question I found this, started to read the "hypothesis", already stopped again at her very first table and was reminded why I don't give much about existing "researchs".
She claims that there is no y at a middle position. So the evaluation was a bit short to say "no" to middle positions of it.



I saw such things before, not very often, but existing.
About the a , working with a very useful map (which is younger then VMS) earlier this day, it shows several southeastern alphabets (Ruthenic in another corner)



"Hunorum" are Hungarian Runes, these were in use at least until 1500+AD. (please google, don't want to put wiki-link herein and then be blamed for "this is German, I cant read German!" or so).
Didn't know the я was used as "a" also some time ago, might be interesting, and it could very well work as leading "a" also.
q  or, more popular,  qo is then obviously "lend" for other purposes than being an a. 

The green circles are for @dobri, as he may read this, he seeks for the red chapter openers of f1. I had seen them in a kyrillic text a ~month ago and can't find that sheet anymore. 
They are calligraphed glagolitic, first one (vedi or so) is clear, the "bird" might come from different letters.
These Glagolitic letters were used within the younger kyrillic at church use for example, sometimes as letter, sometimes just decorative.