Attach ECL to Multi-classing

[kookootoo]

Perhaps a way to mechanically implement how difficult it would be to keep up several very different skillsets.

These are meant to be non cumulative:

ECL -1 for mundane non-caster class
ECL -0 For base caster class
ECL +1 Second Mundane non-caster class
ECL +2 Second Caster Class
ECL +3.5 for Third class

[yellowcateyes]

It is worth noting that the vanilla multiclassing XP penalties have been removed on the Arelith server. There is unlikely going to be a change in direction, as picking up multiple classes is a basic element of character building in 3rd Ed. D&D.