Or, if at all possible: Both!
I'm thinking that, just for the sake of seeing if I can improve concentration alone, I wish to GM a combat- and possibly some smut- based DnD game.
During combats, trying to get a minimum of one post a day from each character, unless they're on vacation. For the purpose of said vacation, if you DO need to be away from the computer for a sizeable amount of time, preferably each character having a small blurb titled Tactics, for a guide to their basic combat behavior when being NPCed. Characters can be anything from the core books, and if you want something elsewise, just IM me with a description, I'll check it out, and being a shmuck, will probably allow it. Start at level 1, peaceful interaction with NPCs will probably be quite light, more likely to involve hostile relations with monsters and NPCs, feel free to be as detailed in the party as you want, we'll see where it goes. Dungeon crawl style. Mainly, as a bit of stress relief- Because everyone needs to spend some time kicking ass and getting tail.