I wish we had more control over her mood changes, like how she was pre-patch SCV. But, I guess she'd be too strong. While I don't like relying on chance and randomness, as long as both Jolly and Gloomy are equally useful, it won't be a problem. Sure, Gloomy may dominate a battle, but what about...
I find it ironic. Tira killing the master she used to serve. Damn, I wish they'd had a confrontation in Story Mode. 17 years in the making. Shit was bound to go down.