I think the term is completist as opposed to hard core gamer. Not all hard-core gamers are completist and not all completist are hard core gamers. Many are both, but I am parsing words. I am a completist myself so I understand that point of view. I would say, that mage wars challenges my completist nature because I find I don't need all those copies of the spells.

When this topic was previously discussed I suggested arcane wonders having a single store where people could buy single copies or multiple copies of the cards they wanted. I still think this is the best way to accommodate everybody.