keterys said:I still plan on just ignoring the '+5 DC' in the DMG, since not only did it not work that way at DDXP, the math is _much_ nicer without it. While greater complexities can increase the chance in certain situations, they'll decrease it in others, and the generic math can't factor in a simple 'You can only use a skill X times' which I suspect will kick in every now and then.
In a few months, maybe folks will have a nifty keen solution that is simple, easy to explain, rigorous math... certainly seems like Stalker is working towards that. I can not sweat it in the meantime![]()
Well I just finished my final ready for playtest version, so I hope its close

Also, one thing to consider with the "-5 DC" adjustment, something I didn't even think about until the later phases of working on my system.
When your base success is 75% (which is what it should be at the -5 DC, that doesn't leave you a lot of room to move up. For example, if the paladin uses his astral speech power, or the ranger uses his crucial advice power, you can get near automatic successes.
For some people, this is perfectly fine, use a skill power, get a big skill bonus. For others this could be a cause of concern.