The pool of lynchable isn't too big really. Caesar, Pooka, Trent and me. Caesar is the most likely to be scum in my eyes, followed by Pooka and then Trent. But since it seems to be too late to get a Caesar or even a Pooka wagon up to 6 votes I guess I'll have to vote Trent.
Caesar is Joppo's top scum pick, but he tracks Pooka? Why, Joppo?
I can easily answer that. While I did suspect Ceasar more than Pooka it was not by a wide margin. And when it came time to submit my action I started to think that, if Pooka was in a scum team with another player he would feel comfortable enough to be the one performing the NK or use a night action, thinking I wouldn't follow him. The same idea wouldn't apply to Caesar, who knowing that a tracking on him was likely to come would probably prefer to let an hypothetical partner handle the NK.
Besides, Miller is a suspicious claim after all. It's a very convenient claim for scum to hide behind. Worthy of tracking.
While we learned who was responsible for the nights without deaths, and holy freck for a first time player Carradice had extremely successful night actions, we unfortunately don't learn more from them about our surroundings other than, well, yogsloth was suspect (he was) and GR was targeted (he was). We don't know the accomplices of yogs or SPF, or who targeted GR  yesterday. If Joppo was watcher he missed a lot by not watching GR instead, but he's a tracker and I wouldn't blame anyone for thinking I am the guy - that is if he's truthful.
Wait a minute, what did Joppo claim again? Oh great, my internet cut out just now. I was wondering if Joppo claimed some sort of modifier? Look at our available power roles. OK, internet back, Gryffindor Tracker.
I actually held back on some of my claim. I claimed I was Neville Longbottom, Town Miller, while leaving out that I had a 1-shot Investigation Immune
modifier - I knew it was going to show up in my flip when I made the claim and preferred to keep it a surprise, not knowing I'd be spared. I had a powerful spell I could use once, that would make me read as Town instead of anti-Town for the one night I use it. I used it Night 3, when my instinct told me that the cop was very likely to investigate me over the previous ones.
Don't stop here: look at the other power role claims. 3-shot cop, two 3-shot JOATs, a bodyguard (1-shot by definition), 1-shot Mafia role cop, a neighborizer who could make one neighbor. Some of these roles compulsive. Look at Joppo's claim. He tracked four people on four nights. That's overpowered  compared to everything else. Why is that?
 - Why do you worry only about who targeted GR yesterday? Do you know who killed Carradice?
 - A tracker is overpowered? Since when??
It's a decent role, especially by endgame when there are less players and PR shots around so it is more likely to find NKs, but in no way I can say it is overpowered. Compare to a watcher who could just keep their eyes on a likely target and is bound to find the scum.
A cop with a lot of shots is overpowered (GR's 3 being ok but not far from gamebreaking), and most of the JOAT shots are much more powerful than anything I can offer. Scum's role-cop was powerful. I think tracker by itself is weak enough that ZFR allowed it to be unlimited.
I'd also suppose I am unlimited because after GR was spent and Joe psychoanalyzed someone we would have no more investigative roles. But you'd better ask ZFR after the game is over.
@Microfish: Sorry for suspecting people who didn't give results, but the remaining scum is hiding well. Maybe I shouldn't follow Lift's advice after all. If I pick only vanilla claimers I will only get scum who claimed vanilla and they may have claimed something else.
And don't forget that I reported Caesar didn't move during N1 long before he claimed vanilla. If I were scum doing it in a role-heavy setup like this it would be a very risky gamble.
Answering your question: I have no modifiers, at least none that I'm aware of. But maybe I have a secret modifier? It's up to ZFR to respond later or we will know after I flip.
@Joe: Indeed, Lift does look weirdly different from how I read him in earlier days. This is much more like how I remember scum!Lift. Can you build a case?