No.1 - Scrap parking charges, but limit parking in certain areas to 3-4 hours.
Where does the revenue come from to pay someone to to enforce the 3-4 hours parking?.
Scrapping parking charges does not mean that you can park anywhere, double yellow lines, bus lanes, the middle of a traffic junction, they'll all still be ticketable, what would be happening is the removal of charges from areas previously you would have had to pay for.
The 3-4 hour limit isn't for car parks or for someone who spends an extra 20mins having a coffee it's just to cover someone who'll move his entire stock of cars to the Multi-Storey at ASDA and run a business from there as he doesn't have to pay for parking.
When we make laws/rules they're for a particular reason, not to be followed blindly with no relation to their original intention.