Even at g13, I can’t imagine he’ll be incredibly effective in many areas of the game. He will be considerably better, but unless a rework, or new content comes around to make him more useful, it would likely be a waste. Unless your goal is to play with Maul no matter what, and want him to be the best he can be. It might make for a good GAC or TW team, but maul’s main purpose is to apply his leadership and to AOE daze... beyond that, he doesn’t matter too much. Unless you’re being hit by a team of jedi, maybe.