It does belong in the alpha forum, but I'll answer anyway.
You are quite correct that the rogue preset (being a sneaky, evasive, melee-focused type) doesn't have a lot of use for the Way of the Ranger ability. I've suggested adding a "Way of the Rogue" ability, and alternate requirements for the abilities, so skills would require EITHER "Way of the Ranger" Rank X OR "Way of the Rogue" Rank X. (That would also help for other classes, so Air Mages and Ranger/Rogues could use Resurrect, and Fire Elementalists could use Phoenix Dive.
Ignoring the skill requirements, A rogue is pretty effective with the dagger's backstab. I haven't played one yet, but judging by what enemy rangers can do, I think that daggers now have a chance to inflict bleeding on enemies.