I have gone thru the whole post. In my opinion the reduction is capping should not be made because of below points.
Advantage:
1) Reduction of capping of lvls only facilitates faster reaching of "skill specific goals". So that players accomplish what their targets faster (which I am not sure why it is needed). Apart from that there is no big advantage.
Disadvantage:
1) Since some creatures lvl is always higher the players will be demotivated to players as they cannot take these creatures alone and it may not be always possbile to combat these creatures as a team. If players want to play as a team, instances are always available and rules and strategies can be tweaked there for players to enjoy and leave the actual game to cater to players to different tastes and preferences (players can take on creatures in multi attack maps).
One option is bring more fun is bring in C3 with more advanced tools / items - nets and traps (some already started in Engineering skill) and sophisticated creatures (flying dragons )
OR
Make it easier to change the player profile make the perks / nexus / attribute modifiers (potions, stones, etc.,) more easily and cheaply available. This makes players to change their profile easier and players can switch theire profiles by using these modifiers.
Regards