Look at it this way:
The strength of the system is "once you buy the card it's yours"!
Totem has allowed us to delete cards we don't want to save disc space, etc. BUT they will store them so that if we ever really want to go on, say, an Elya jaunt, we can immediately down load her from our deleted cards & have at it with her.
In addition to lowjoe's reasons this keeps the collection positive.
It's all yours as long as Totem stays in business! So BUY, BUY, BUY!
Keep 'em flying!