I talked last about how there seems to be a desire in the DCC community for more character options. I'm going to talk a bit about why I think there are already plenty and about some of the options that may not be so obvious.
First of all, one can always have options through roleplaying. What is a ranger anyways other than an outdoorsy warrior? You don't need permission from the rules to be outdoorsy. Likewise, isn't a bard just a rogue standing in the back with a lute? You don't need permission for doing that either? Oh, I see, you want a mechanical advantage. Well, I think there are lots of options out there already:
Backgrounds determine your initial skill set? Want to play something specific? Well, ask the DM if you can choose your background! If its because you have a character concept I think I would say yes for one. There are lots of backgrounds, and if you don't see what your looking for, here is an easy place to make up your own (although again, I think there are plenty).
Clerics are very different from each other! Different powers and weapons based on alignment (and deity) and different spells! Each cleric will be unique based on their spell selection and the more you flesh out the religions the more variety you can have. I see no reason to have paladins when clerics are as awesome as they are in this game (I know you want the warrior hit die and mighty deeds of arms, but well, no, because I like niche protection).
Different ability sets by alignment mean like the cleric you have three subclasses. Join a guild or other roguish organization to flesh your character out more. If you want to buy a lute, buy a lute. A thief could also decide to be outdoorsy.
Warrior & Dwarf:
Every warrior should be different! They have lots of options just looking at mighty deeds, weapons, and armor. Be creative and there is no need for other warrior classes. Maybe a ranger specializes in bows, a barbarian wears light armor and carries two-handed weapons, a paladin (if they are not a cleric) is heavily armored with sword and shield.
Wizard & Elf:
The limited access to spells will inevitably make every spellcaster unique. Spells are rare, and a wizard or elf will only be able to master a few of them over the course of a career. The master of the elemental magics will be quite different than the wizard who traffics chiefly with otherworldy beings, who will be very different than the roguish enchanter.
I admit that halflings stump me a little. The only class that does not just seem to be obviously teeming with options to my eye. But, roleplaying, roleplaying, roleplaying! Just because halflings are sneaky and good with two-weapon fighting does not limit you to playing them that way!
I don't feel like I explained my thinking well but I wanted to give at least a glimpse of the options I see in the core classes. True, there may not be that many differences in the way a Pathfinder player would view them (the characters "powers" will be the same) but there are plenty of viable ways to play any character class. I think this is a game that gives a lot of options to players based on creativity and roleplaying, I don't think new rules are necessary.