When it comes to SPIN spells, level doesn't really matter. Currently if we use ADD_SPELL and there are not enough free slots for a particular level weidu won't add the spell at all. It would be great if weidu could automatically increase level if such situation occurs. Example implementation:
1. Add new option to ADD_SPELL so that weidu knows that it's ok to increase the current level by 1 (or better yet start from the level 0 just in case there are not enough slots for level 9)
2. Or simply do it automatically if type = 3 (SPIN spells) is chosen.
It's better to assign different name when it comes to these type of spells rather than not install them at all. And 990 slots is better than 99