Skin Weight Tab - instead of "Change t-pose" have an animation clip that can transition to T-pose
Some areas can look very glitchy and to new users they may not trust the process when things don't look right. Having a slider that can allow the users to transition to a t-pose will give them better feedback to help show they're on the right track.
Even the most skilled can become frustrated with complex projects, this might help. It should have a slow flash option to keep the user aware they are using it..