It should be very difficult and time consuming to max skills, because that's the way it would be if the game were real (see my post in the RP Covenant thread)
There is no reason grinding should be considered OOC or non-RP friendly. If someone wants to RP their character who is so focused on gaining power to the point where they exclude themselves from all social interaction, that is perfectly suitable.
Perhaps, but it´s NOT real, it´s a game. Games are above all else supposed to be fun. I´m not saying it shouldn´t be difficult and time consuming to level up: I just think there should be a fun way to do it. I also think you should be able to do it through role-playing, not only laborious mechanics. That´s why I suggested advanced and multi-player quests for this in my previous post. I guess I´m alone on this one, but I really would like to know what people think of this idea.
To say more about it, here´s a possible example.
Player 1 to NPC: I need a quest
NPC: (checks that the player has a certain amount of factions and skills, then): Thank the gods you´ve arrived. The upper guard chamber has been sucked into a mysterious dark vortex. Help us find out what it is and stop it.
Player 1 asks around and another NPC tells him what it is and that it can be stopped by several high-level crystal mages working together. Maybe they have to do some other quests to get particular glyphs and spells or whatever.
Players 2-4, being checked for particular factions, stats, etc. join the quest. (This could be done now I think, by simply giving player 1 a bunch of quest items to hand out to the other players. They could perhaps get a different, connected quest if they have that item.)
Players do whatever they need to, and present their proof to the NPC(s). All the players now get a reward, possibly including: enough money and PP to actually level up by one when you have a high level, OR a level increase in something particular.
Since low level-characters wouldn´t get the quest, you don´t need to worry about giving them a disproportionately large amount of money or PP. Basically, the reward scales with the level of the character, not like now. The multi-player aspect means you have to role-play, and provides a great storyline and pretext for doing so.