Ok, so:
What does "present" and "regulate" mean in this context?
And how can anyone be affiliated with a group that is controlled (well, overseen) by another PC?
Finally what happens if a Tower is killed/arrested? (do you get to roll for a new one? get a penalty, while your successor char trains? Are there now fewer towers, and if so, can I murder my way to Dictator?)
<also, application spot reserved. (in case you decide dealing with all the players is too tedious for your liking)>
Regulating trade affairs means 'okay this guild gets away tax free and these get double taxed and this foreign scum has no entry to Ragona whatsoever'. Of course any of Coin Master's decisions in these matters can be questioned by the Towers. Decisions of the Highest Judge and Chief of Centurii can be questioned too.
Senex Princeps presents aka explains current matters of the city and events. Basically gives you something to discuss and vote on
SP controlled by me will honestly tell you everything you need to vote on, but once a Player becomes Senex Princeps, I will send current affairs to them and then they
should present them to other Towers during the council time.
I kinda can't wait to see how much of administrative clusterfuck this becomes once you people get the titled positions
Well, he also makes sure everything is in order. He is also the person that foreign powers will talk to first, at least officially. He also temporarily becomes Coin Master, Centurii Chief or Highest Judge should they get removed in one way or another, till their replacement is choosen by during a vote.
If Senex Princeps gets removed, an emergency meeting and voting happens where a new Senex Princeps is choosen.
So he'd be the one to investigate if say, a Tower suddenly got assassinated? Or do you mean something else by that everything in order? I'm guessing he doesn't get a vote, since he oversees the voting process? Does he at least get some sort of veto power? Honestly he seems to be mostly a figurehead, not really sure why you'd want to get that spot beyond the prestige.
Foreign diplomats speak with Senex Princeps first, too. Senex Princeps is also only person that can hold a vote to remove a Tower or title-holder from position. And no, he isn't blocked away from voting (and neither are other titled positions). Everyone's vote counts equally.