Also, and finally, for god's sake, put assail in the bludgeon category. Charge was bludgeon, why Assail, wich is the upgrade of it, change category? With how the game is done anyway, we can't really afford to put point in insight anyway.
I should have clarified earlier that Assail's attack is actually based on Strength, not Insight. Unless an ability's description says otherwise, attack rolls and damage are based on the weapon used, not the ability category. Assail and similar abilities like Seize the Opportunity therefore act like Strength-based Bludgeon skills even though they're unlocked by Tactics.
So no need to put points into Insight to get a decent attack out of Assail! Maybe the Quick Reference document needs to make this clearer, though.