All servers have roughly the same amount of people. They did a server merge awhile ago that brought all low population servers up to a higher population. Since that time they have remained roughly even. What really matters is the linkshell, since you'll have the best luck getting groups for a lot of things through grouping with friends.
When it comes to sitting around not doing anything for long periods of time, only being active for short windows, and marginal changes and sidegrades I'd say FFXI players were the perfect choice for politicians.