Touch Spell Riffing

Possible optional rules to make touch spells interesting. These are not written to keep combat balanced, as I don't enjoy powergaming and basically reject the core activity of D&D :|

* They can be kept coherent and passed between people before being deployed. Doing so taxes the caster. HP? Some other cost?
* This implies that they could perhaps be imbued in objects, temporarily, as traps
* They are somehow intimate; you're messing about in someone's aura space. You can get a bonus to the attack if you tell the target a memory of yours, which passes to them with the spell.
* As an unpleasant corollary, some types of curse are transmissible by touch spells
* Certain spell types are conducted by certain materials. Necromancy=bones? Etc etc. This could affect their deployment in certain environments.
* Or worse they're insulated by certain materials
* You can use touch un-spells to steal enchantments from other people

At this point I started spinning off into space; the resulting magic rules wouldn't resemble D&D at all, so now I have to Kickstart a wizard game I guess :P