How disruptive/game-breaking do you think it would be to offer archetype's options for abilities granted by a class in a piecemeal system? Trading what you don't want for what you want, from any base class or archetype. Obviously, common sense and a good GM who has some control of his players will be needed, and I would never suggest using this for anything near an official game, but what (if any) huge problems do you foresee?
Make a requirement that they actually have to list a replaced ability. Also should be noted that not all abilities were replaced with an ability of equal power, but "balanced" within the archetype against its other exchanges. Luckily super genius games already did this with their talented class products. It should also be on d20pfsrd.
How disruptive/game-breaking do you think it would be to offer archetype's options for abilities granted by a class in a piecemeal system?
Pretty sure there was a thread on a similar thing just last week... but anyways, it wouldn't be broken at all. In fact it'd be less disruptive imo. More creative control and more power to the players, what's not to dig about that?
I had a DM back in 3.5 days who would have said this was unfair.
He was wrong.
If someone creates a melange of abilities that is somehow game-breaking, deal with that as an individual case. Generally speaking, options like these only improve roleplaying and player satisfaction.
The only real downside I can foresee is that players will be confronted with a lot more options—suddenly, the decision tree for character advancement becomes huge—and might take longer to pick their class features :)