In attempt to make things less complicated we are making it more complicated.
Finding what AGS is worth is the hardest part. The fairest way is take the average prices of BTC and PTS over the AGS donation period and the multiply it to the amounts of each coin donated. Add those two together. This will give you the averaged out cap of AGS.
Now you have to also consider BTSX. Since some people have sold their AGS accumulated BTSX, we are going to give them a double dip. So you have to conclude current BTSX holders should get a majority of any new shares. This also ensures that people who have bought more in the meantime don't get those shares taken away and are rewarded laterally. So the FEB 28th should have zero to do with anything at this point. The fairest way to distribute BTSX so they get the lions share is to take the average market cap of BTSX up to the snapshot day.
Do the same for PTS.
Next Pick a date at which the "Mega" snapshot will occur. It has to be the same time, same day for all chains (PTS, BTSX, DNS).
Add average PTS, average BTSX, and averaged out AGS market caps to get allocation percentages.
Average BTSX market cap is probably around $65million
Average PTS market cap is maybe around $8 million
AGS averages equal the guessed $5 million (this one will be harder to find but possible)
BTSX holders get 83% of new BTS
PTS holders get 10.2% of BTS
AGS gets 6.5%of BTS
AGS should get the least to avoid the double dipping of pre 28th distribution and to avoid rewarding post Feb 28th'ers with a cheaper buy in to BTS.
The numbers above are total guesses and maybe completely different.
DNS should be an asset like distributions and thus the allocation should be equal to what anyone holds at the time of the Mega Snap.