A post of mine from earlier in this thread that was part of an exchange with Backwoodsman:

Teribus - 29 Nov 16 - 01:48 AM

Well Backwoodsman if your Head of State has no power it does not matter a jot if he/she is benign or not, as they direct and affect nothing as a Constitutional Monarch. Also the electorate have no idea at all as to whether your elected executive Head of State once in office will be benign or not, and once in office you have no guarantee he/she will play by the rules - lots of examples of limited term Presidents who changed those rules once they got into office.

Kwame Nkrumah was a perfect example of this:

- Subverted the judiciary
- Banned all other political parties
- Rigged elections
- Ignored limited terms and made himself "President for Life"

It only took him 7 years to do this.