Something I don’t think anyone else has mentioned is how much easier it is to build a real monster of a one trick pony. When your not spending points on anything else but Mental Domination, you get REALLY good at it. Especially when as a villain the GM can spend as many points as needed to do it up right.
This is not a slam, it’s just an acknowledgment of the fact that some villains are just going to be Hella good at their job. It’s for the PC’s/Heroes to think and roleplay their way around the problem instead of relying on lots of points in Smash Stuff and metagaming their way around the write-ups.
A character like Purple Man makes my flesh crawl, especially when portrayed as well and as creepily as David Tennant did on the Netflicks series Jessica Jones. But he would be a great recurring character type in a campaign.