I wouldn't call the bow using bard an outlier. . .it is a supported build. When it was released in PHB2 it was supported. There are powers for it. Implements for it. Feats for it. And *one* paragon path for it.
This is one of those situations where I see the need for more options for classes like Fighter, but not at the cost of getting at least one or two more PP's for this build, and others. I was similarly frustrated with the Assassin, as his only magic items for awhile were the generic ones, and it wasn't until the Monk was given the same mechanic that he got some more options. For the most part I like WotC's method and the magazines' addition to the game, but I really think some builds have had plenty of attention, while others could use a little love. Bow using Bards seem to be one of them. Not that this Path is inherently *bad*, since that is a subjective judgement, but that all bards who want to use their bow must either use this class or a certain implement. No real bottleneck exists for Flail using fighters. Give Bards more Paths, or a Feat.
For Felon though, unless his DM allows some Dragon content this kind of kills his character. Not because it is less powerful, but because I'm sure he has come to resent that power, and that can suck the fun out of playing real quick.
Jay