So, I've been working on one of those naughty point-based systems to work with Pathfinder a bit lately and wanted to share some thoughts, as in, here are some of my thoughts and I'd love to see some of yours.
First off, here's a few problems that seem to come up with point-based systems:
1. Point-based character building takes way too long and opens too many odd abilities and exploits up to the player. - Fair enough, Pathfinder and other d20 games are based around the idea of handing you pre-made options. Pulling characters, abilities and items apart is, essentially, pulling game apart.
2. Point-bought abilities tend to unbalance the game pretty severely. -It takes a pretty iron-fisted GM to keep ability buys balanced on their own terms. These abilities also tend to follow an exponential progression as opposed to the additive progression of standard d20 games (class abilities, feats, magic items), so it's usually only a couple levels before they far outstrip standard abilities.
3. The points themselves aren't usually consistent with any existing game currency (GP, XP, feats). - Like I mentioned before, the exponential curve growth of most of the point-based ability progressions I've seen makes this next to impossible.
4. Existing content gets marginalized. - As a result of the other three problems, feats, classes, levels, spells, Xp and money don't mean all that much with the introduction of a character point system. That means all the other material you own doesn't play very well with the point system.
So...after going through the problems, I think there are still nice bonuses character points could add to a Pathfinder game. For one thing, some of what makes the wizard such a powerhouse can be spread to some of the other classes. Character points also add some alternative in-game support for some role play perks like background traits, organizational ties, holdings, cohorts and most importantly character disadvantages. It also gives those kind-hearted GMs you hear about a currency they can throw at weeping players when a dragon eats their pony or burns down their house or that magic weapon they no longer want the player to have suddenly drops into a pit of acid.
Here's my take on how some of the problems could be addressed:
1. Make the system supplement existing mechanics. - I don't want to replace classes or levels or class features or feats or spells or...well that's a lot to list, let alone actually try to replace the mechanics. I'm working on something that you can tack onto the existing game without unbalancing it.
2. Pathfinder already has a system just like this. - Yeah, it's true. Instead of actual character points, it's gp though and it's all based on magic items. Through item creation, you're already getting the mechanical advantages of a point-based supplement and it's usually the party wizard or cleric controlling the flow of customization. I've been extracting values from the item creation costs to work as a base for ability purchases. It gets a little funky though, so it'll be a bit before I have some quotes.
3. See above. - It'd be nice for a GM to be able to convert some of that treasure to character points for those that were never keen on the idea of the party lugging around thirty billion tons of gold everywhere and weighed down with an arsenal of magic items. A lot of those rp perks really don't have a value in gold either, but the in-game effects can be just as important.
4. As a supplement, existing crunch doesn't get replaced. - The big problem area left with supplementary character point abilities is feats. Open everything up and craft feats are worthless, or some abilities may marginalize existing feats. Best solution I can come up with is feats that open up certain limited purchase tracks or purchase tracks that require certain feats or other requirements. For instance, a cohort or leadership feat might open up options for purchasing servant or minion perks or a fighter may be able to take something like an atunement feat that allows him to apply magic qualities to favoured weapons.
Anyhoo, questions, comments? Snide remarks?