I would personally prefer 0.5 per catch to any of the other options (1 per catch, any number of points per first down catch, not having PPR at all) but would be amenable to just about anything.
Also, as long as we're bandying about scoring change ideas, I'd like to more seriously suggest the kicker thing I previously mentioned in
302; specifically, that kickers get 0.1 point per yard of successful FGs, rather than an integer number of points based on distance intervals. As an example, a 37-yard FG would be worth 3.7 points instead of 3 points. I have no particular argument for why this is any sort of remotely necessary change; it simply made kickers a bit more fun in the league I was in that tried it this year, so I figure why not, maybe it'll take here as well.