Martino, if this were a regular game where we would find out Rafay's role and alignment if he is night killed I would agree with you and I would have already removed my vote. This isn't a regular game though. If Rafay does not claim a specific role then there are four possibilities.
1a. He is a lying scum and we don't lynch him. In this case we would be short of a scum lynch today, we would likely waste power role actions tonight and we would if he is the SK have an extra town loss tonight as well. He might still very well survive the night, especially if he is the SK, and whether he dies tonight or not, tomorrow we would still not know for sure whether he is lying or not.
1b. He is a lying scum and we lynch him. This is simply the best possible result we could hope for on Day 1, especially if he happens to be the SK who cannot be night killed tonight.
2a. He is telling the truth and we don't lynch him. He could perform his night action. However if he is killed tonight we would still not know for sure that he was telling the truth, while the scum that killed him would know and would certainly use that to their advantage. Neither would we get the result from his night action as he would not be around to tell us. And even if he does survive the night, since the town gets no information about role and alignment of the night kills, we would tomorrow still have no way to be sure about anything Rafay would claim happened during the night, nor about his own claim of role and alignment. The scum would have to use their night action on Rafay giving some protection to others, but I'd say the scum would happily do so to kill a power role.
2b. He is telling the truth and we lynch him. We would be short of one night action, lose his power role, and the scum would be able to use their night actions for something else. On the other hand we would prevent that the scum gain a valuable information advantage that they would use against us.
Now how to evaluate this. Of the options 1a and 1b where he is a lying scum lynching him would be most excellent and not lynching him would be most horrible. The two options 2a and 2b where he is telling the truth on the other hand both have there pros and cons. I guess its a matter of opinion how to evaluate those, but I would say that 2a where we don't lynch him still has some serious cons even when he is telling the truth.
Conclusion: when presented with these options, the best play is to lynch him.
This conclusion is especially valid as Rafay could change the option we have to our advantage by claiming a specific role as in that case no matter what happens during the night, if he is lying at least one of us will know and most of the cons of not lynching would evaporate.
So I ask you, if Rafay is indeed a power role, why would he put us in this predicament by not claiming a specific role? As Shepard noted, there is no point in keeping the specific role a secret as scum will know anyway when they kill him tonight. There is on the other hand plenty of reason to be specific as only then will town also have that information.
If Rafay is lying though, it is pretty obvious why he would not want to make his claim specific. If he would then their would after all be at least one of us that would know that he is lying.
There simply is no town motivation for not being specific.
Add to this the following. Rafay claimed very early in the day. If he was a true power role trying to keep his role secret he would have been much more likely to wait and see what happens. As the day progresses some people could very well have unvoted him for other reasons than him claiming or a larger wagon could have come up with someone else. So, why in the hell did he not wait with his claim until the dead line was much closer? I can so no reason for it and thus it just adds to my feeling that he is a lying scum.
Addi