I've read the mythical man-month. That mostly applies for trying to add 1,000 people to a 5,000 team in the last minute.
I agree that adding a person post Feb 28th was probably not going to help much, because it's about designing the algorithm, not the implementation.
However I would still argue that you COULD have had an alternative solution being developed side by side.
My biggest frustration here is that you consider yourself the authority on the subject because you have captured the funds.
However if you had offered a hefty bounty for developing a POS trading, I'm sure some talents, would have participated and the result would have been healthy competition. And by hefty bounty I mean $50K-$100K and above.
However you just assumed that Bytemaster is the best to do everything hard, and now you are going to lick your wounds.
The right way to do BitShares would have been to allow the community to decide which DACs they can put their money in. I definitely don't like the "I buy AGS, and I get % of all the DACs".
Furthermore creators of new DACs have to still organize their own funding. Which I thought your platform would allow.
Again as a developer I did not see compelling reasons to join your effort, and I would have loved to. You have attracted investments, but not development talent. Hopefully that will change soon.