it would be more work for a mod cause you know trolls... they find ways to play the sympathy card - if you remember this user 'cyrilmosh' you will know how much of a headache he is ... because he just has no idea he was a troll, and mods in turn had to explain their case, which was very difficult since some trolls are just very good at it.
you will notice that there are some trolls still here in PM, and they just cant be banned, cause they know how to play their cards... giving them more power is just more work for a mod.
im not saying your idea is bad... it has its good sides because it will allow you to remove troll posts who are just trying to start flame wars in a thread... but then again, the privilege is easily abused, because let us face it - all of us males have the tendency to kick out anyone in the room who doesnt agree with us, leaving only the ones who do, which makes for a pretty biased set of opinions.
I remember cyrilmosh but I was not a fan. However, we cannot expect everything to be nice and dandy. Once in while something will eventually come that would require us to flex some muscles or some brain cells. That is life.
I hope you are not saying that there are more trolls in PM than an average member? Depending how you look at this, like in the glass half-full-half-empty thing, giving some extra powers to thread starters can work for the better or for the worst. If we have more members with acceptable behaviors who are thread starters, then the mods can have an instant army "marshals" in their little threads. Of course if we have more trolls here who are thread starters, I don't even want to think of it.
Again as pointed, if TS becomes abusive of the extra powers, wouldn't it make his thread boring which will eventually kill his thread? Worst scenario comes, the Mods still have the overall power.
Let's weigh in all the pros and cons. I'm not betting that this is perfect but I do hope the advantages out weighs the disadvantages.
SUGGESTION FOR THE MODS: Can we pilot this in AGT even for only three months at least? Then, lets discuss again and decide if you like to modify some rules or to totally scrap this idea.