I agree 100% the inactive need to be removed from the game after a set amount of time. Maybe make it harsh with the current restrictions in place so say 15 minutes and amend this when the population cap is increased. No one is going to log out of the game if they can't log back on for 3 days.

The only time I've managed to get onto my "main" character is after 11pm GMT and since I have a life and a job I'm too tired to actual do anything after this.