I have yet to read all of your comments, but I'm all in for Spezza taking over for Alfie when Alfie is ready to retire.
Spezza has proven to me with the end of last season, this summer and the way he has conducted himself this season, that he has indeed become much much more mature and he is taking steps to becoming the guy the team and management look for to lead them to the promised land again.
I can't really see where anything negative would come of this. He wants to win very badly, he's young, fresh, getting better all around -Even defensively, which is obviously very important for someone that is going to lead the team.
Aside from him, I can't tell you who I would name as captain of this team. I'm not a big fan of putting the C on Fisher, not knowing where his future is with the team. Phillips couldn't lead anything this year, so he's definitely been taken off my list of favorites for that position. He should've been able to do much more for the team than he did this year. Same for Alfie as much as that pains me to say.
When the team was down in the dumps this year, the only person I heard of that was trying to do anything to make the team positive again was Spezza. He planned an outing at one point for the boys to have some fun. He was trying to get everyone out of the dumps. I did not hear of any other Sen doing that...not then, and not since.
I vote for Spezza at this point, he should be our guy for sure by the time the Alf retires.
(Cowen might make a push but he'll still be very young, same for Condra)
Neil could be another candidate, but I'd prefer Spezz.
EDIT: How could I forget Kelly too, he's definitely a candidate.