There are a number of technical issues involved in designing a new electoral system. As with any idea, the devil is in the details.
Several of the important issues have been explained in the links below, so that you can see how Simple MMP works in more detail.
Responsibilities of Local and Top-Up MPs Click here
Measuring Proportionality Click here
Description of the Top-Up process Click here
How Top-Up Ridings are Selected Click here
Compensatory versus Non-compensatory Top-up Click here
Optimum Local Percentage and List Seats Click here
Redistribution Issues Click here
Constitutional Requirements Click here
Providing Transparency Click here
Reporting the Results Click here
Judicial Recounts Click here
Other considerations (Age, Online Voting, Etc.) Click here