The other day I commented how paragon paths had dropped in power level since the first Player's Handbook, with many negative consequences such as reduced class balance, unfulfilled player expectations, and a tendency to ignore the majority of 'normal' paths. From that, I concluded that a complicated, but viable solution might be to errata (or, in my case, houserule) the most potent paths so that the power gap with the rest wasn't as large. The downside was the list of paths to change was sizable: around two dozen. On the other hand, since the next best thing would be to upgrade the remaining 400 paths, I guess we are stuck with that.
You can see my list of broken items below. I think all of them are prone to abuse or otherwise broken, even if some aren't too popular in the optimization community. Also, I've left behind some very strong options that nevertheless felt fair (most notably, Kensai). The table is missing an explanation for the cause of brokenness, but don't worry - I'll provide in-depth discussion, as well as fixes, in upcoming posts. Note that no material from Dragon magazines has been included; I'll add that in a future update.