how did you get the idea of 45DP?

So the starting idea was Problem Sleuth Battle Royale, something that would merge the reader-driven compounding mechanical absurdity of problem sleuth with the high stakes and absurd violence of a Hunger Games sim. I wanted a cast of characters I wouldn't have to waste any time establishing or building a relationship with, and ideally something where the readers could jump in and immediately start suggesting that any characters attempt any act of cartoonish brutality they could think of against any other character. US Presidents filled the hole perfectly, and the topic was very on my mind in the run up to the Big Game 2024, and it would allow me to draw on the long tradition of "epic president" humor that was huge in like, the 2000s to early 2010s.

Will we hear anything about pizza-hut? we hear alot about dominos so it would be fair to see something about its rival

Domino's controls the plurality of global food production, their monopoly on chain-pizza is absolute.

How do you mesh fan suggestions into the story while maintaing (I'm asuming) the overall plot?

Autopraxis has always been pretty on-rails as far as MSPFAs go, if anything bc we have a lot of ground to cover so I don't like to linger on plot beats longer than feels necessary. That said, I still make an effort to put the characters into open ended dilemmas where comedy and forward momentum can emerge from a variety of inputs so that there's room for readers (and me) to fuck around and make things happen.