Edit: For a more comprehensive response: They only way to have your skills at the absolute cap (every skill at the maximum level) is to have used (a lot of) injectors. If you’ve been doing that, perhaps you should spend your isk elsewhere?
If you have your current skills at max level, perhaps it’s time you branched out into a different race / professions / activity?
There are probably fewer than 10 players that have all skills maxed. Hell, there may not even be but 2 or 3. There’s something like 300 million SP worth of skills.
Autopilot, hell no. You shouldn’t be awarded for your laziness. Every autopiloted ship deserves to be ganked.
As far as missions go, as long as you don’t refuse a mission from the same exact agent less than four hours apart, you incur absolutely no standings loss…
427 million, if memory serves me right. If you add exclusive skills that we don’t have access to, like Omnipotence, CONCORD and Polaris, you end up with around 478 million(?).
Maximum’s just over 500m as of right now, considering all player-available skills (thought not necessarily skills that are either useful OR still available).