Theo R Cwithin
I cast "Baconstorm!"
You could just lower the entry requirements on the PrCs so a 5th or 6th level character has a shot at meeting the prereqs. Frex, lower spellcasting requirements to 3rd level spells, character level requirements to CL 3rd or 4th, BAB requirements to +4, and so forth.
Some people have even talked about doing away with the prereqs altogether, effectively making the PrCs into base classes (where it makes sense to do so). I imagine you'd have to be careful with that, but, at least for the SRD PrCs, I understand that most of them don't have much in the way of balance issues.
There have also been at least a few attempts to make "feat chains" that grant access to the first 4 or five PrC class features, usually with the requirement that the character level be 6th.
I can't of the the links, though. If I can find my notes, I'll repost what I yoinked from those threads.
Some people have even talked about doing away with the prereqs altogether, effectively making the PrCs into base classes (where it makes sense to do so). I imagine you'd have to be careful with that, but, at least for the SRD PrCs, I understand that most of them don't have much in the way of balance issues.
There have also been at least a few attempts to make "feat chains" that grant access to the first 4 or five PrC class features, usually with the requirement that the character level be 6th.
I can't of the the links, though. If I can find my notes, I'll repost what I yoinked from those threads.