Some thoughts, as I listened to the megillah last night.
2) The megillah lists 10 sons. It is not a myth that he only had ten sons, just because a midrashic discussion of it lists more sons. On the other hand, the rov banav may indicate more. Indeed, in the gemara in Megillah they darshen a gematria, that he had rov children, meaning 208.
3) These are the sons:
Why require in a single neshima? I think it is clear. These are difficult names to pronounce, and if one tries saying them in a single breath, he runs out of breath towards the end. This adds a feeling that there were so many, all these different sons, such that you run out of breath trying to say them all.
4) Why the small letters? There have been many explanations over the years, including the famous Purimfest one. The answer may indeed be some encoded message, but it seems to me, on a peshat level, that the following is apparent. Small letters are sometimes used in Tanach to indicate that one should read the word as if it were not there. veLibkota, vayikra, and so on. At the same time, these are arcane names and hapax legomena. It seems easy for a question to arise as to the proper spelling. And there is no other instance in the megillah to help resolve. And so the questionable letters were made smaller.
DovBear considers the pros and cons of the Purimfest 1946 story as fulfillment of those small letters. It is possible, but not necessarily a slam dunk. There were several millenia for this to work out in, and there is some slight kvetching involved. But even if we regard it as deliberately encoded into the megillah as a message by Chazal, this does not prove the Torah Codes or the Gematria Codes. Because the Torah Codes uses an entirely different methodology, and does not deal with specific letters which stand out for being small. And the Gematria Codes can be interpreted in so many different ways, because that is how gematria works. This is far different than interpreting specific small letters, which have been so marked, as a year. (Indeed, if these particular small letters represent questionable letters, then they might undermine Torah Codes, which require a certain skip length between characters; though they typically operate on Torah rather than Nach.)