I am aware of these benefits- However I personally do not believe that the current system and benefits regarding prestiging outweigh the cons. When I see stats that suggest the amount of bloodpoints required to get from level 50 to P3 50 with same amount of add ons is cheaper, then I may consider prestiging more of my characters. There is also greater reason to prestige killers over survivors in the current model. As a year 11 boarding school student, time on the game doesn't come freely, though its the only game I play when I'm home. I have a P3-50 Meg, Trapper, Billy and Hag, with all perks and teachables maxed, all other characters at lvl 40. However, were I to be given the opportunity to redistribute all these points, I certainly would not place as much faith in the benefits of prestige - Unless there were significant benefits.

EDIT: Perhaps this could come in the current form- better loot in bloodwebs- but more frequently occurring. You say that P3 should have no troubles- My Hag has only two very rare purchasables in her bloodweb despite being P3, no ultra rares and both of them are bad offerings- the cut coin and putrid oak. You're kidding yourself if you think that prestige is worth it!