IMO - the majority of people are not qualified to choose who runs the country. That is actually a serious statement - not a glip/flippant comment.
A voting reform should be more like:
If you are tax negative - ie. you have taken more than you have given to the system - then sorry no vote. Yes this includes students, disabled people etc...
It would work quite well (IMO - although I probably haven't though of a horrendous glaring hole

) as it would discount criminals whos time behind bars cost the tax payer more than that individual has contributed to society. Spongers would instantly not be allowed to vote and thus stop a us spiraling into a welfare state.
I'd suggest caveats are added so that someone who worked for 20 years and then got screwed by injury/redundancy etc... are not ignored and OAP automatically qualifies for voting.
Bottom line, if you have taken more out of society than you have given it then you cannot decide how society is run.