I pretty much agree with everything you've thrown on the table, Matt. Luckily, or hopefully, at least, my main character, Michael, meets all of these criteria regarding his abilities. I can definitely tweak his portaling ability to act as a sort of fast traveling mechanic. He can only use the Corridor of Darkness if he knows the location he wants to teleport to. Other than that, I believe his skills as a magic-using, sword-wielding, dragon-possessed, tactician are in check. If it is preferred, I can recreate a CS for him and a few of my other characters that explain their pros and cons more accurately.