I like to get your opinion on an interesting question that Dwayne of Gamer's Closet asked me.
Many of you with the Majestic Wilderlands know that the additional classes I created originated in what my players did throughout the years. Some were created from antagonists while most were created as result of the players wanting to roleplay being a member of a particular part of the society I created.
Because I referee using sandbox techniques where the player drive the direction of the campaign. It is plausible that a situation may come up where a character may want to switch classes. Say a fighter worshiping Set decides he "seen" the light and becomes a devout adherent of Mitra to the point where he wants to be a member of the priesthood. Or one of the magic using classes deciding to learn the traditions of another magic using class. Order of Trehaen to order of Thoth etc.
While the d20 method of multi-class certainly solves the issue it is not in the spirit of OD&D and require a lot of messing around with the character class system which is what I don't want to do.
I come with several ideas
1) Drop the current class completely start at 1st level in the new class.
2) Do #1 but when you equal the level of the old class you get to use it's abilities again. You get to keep your old HP total tho.
3) You quit earning XP in the old class, keep all it's abilites and start as first level in the new class. You don't get any new HP until you exceed the level of the old class.
4) You start dividing XP between the old class and the new class advancing in both. The new classes starts at first level.
I am currently leaning to #3 as it make the most sense from a realism point of view.
Before folks go debating me on realism, my point of view that given X alternative for a given game system with all other things being equal I am inclined to go with the option that feel most realistic. So my first criteria for switching classes is to make sure all the alternatives are in the spirit of OD&D. Then I will weigh the pros and cons including which feels more realistic.