I still prefer single charges for various "products" and/or individual services (like registration codes, name changes, server migration, higher prices for expansion-packs, etc.); but I do see the logic behind subscriptions...
We're basically asking SE to live off "commission" like they're some common retail shop. They are offering a "24/7" service, and do deserve some sort of "salary." I just don't know what would be tempting enough for ppl to want to pay monthly (not without offering "unfair" rewards to "premium" members).
