So! What's the MaxWin & MaxBet sizes allowed ,How likely is it these limits will change again
Moneypot is using kelly criterion for the bet amount which you can find at the FAQ or you can read here
https://en.wikipedia.org/wiki/Kelly_criterionWe use the generalized kelly criterion, to determine if a bet is acceptable or not. For a given bet, the Kelly criterion tells us how much of our bankroll we should risk. We will only ever risk less than the kelly suggests, and never more.
Im not much of a math guy but Ryan mentioned one time that it will be depending on the bankroll (not sure if it is at plinkopot chatroom )
So basically it will be using this formula
1 x Bankroll x HE
The limit for this will depends on the bankroll and the bankroll is floating around ~146
BTC https://www.moneypot.com/investment then the max win for the site would be ~1.46
BTCP.S : not sure if this differ depending on each sites or no
P.S 2 : Congratulations for breaking the Hall of Fame

Great reply btw. And no, it doesn't differ per site. From investors perspective they don't care where the bet comes from, if it makes economic sense they will accept it regardless of origin. And if it doesn't make economic sense, they'll reject it, regardless of origin =)