For such popular and strong projects as paypie, it would be nice to have a whitelist or an individual cap like in icon so everyone can participate
mmmm, I don't see why would that be necessary, anybody could participate, so why use a whitelist? the only thing I could think of is to have an estimation of the investment in a pre-ico, so they could receive a bonus for early participation, that is an advantage you are asking to have, can be good or bad.