As of yesterday, I finally picked up a copy of Kingsport Horror which means I now own all the expansions for Arkham Horror! (even if I did accidentally drive down a bus lane which i'm sure I'll get fined for >.< ).
I've just spent this evening carefully taking out and seperating all of the expansions back into their individual boxes (except for the items/skills) before adding in Kingsport with CotDP for good measure in preparation for the next game. I'm fully expecting Kingsport to be quiet from what I've read (hopefully Miskatonic will do something to alleviate that), but I'm looking forward to seeing the new investigators/AOs and the epic battle cards!
I'm not sure what to do next with my Arkham set (other than play lots more games!). I'm eyeing up some third party parts (including stands for the gates) and the investigator/monster miniatures. The only thing is I got to see the investigator miniatures for myself yesterday in the store I picked up Kingsport (something I wasn't expecting as I'm in the UK) and they're very expensive for what they are. I quite like the sculpts (I own a few of the unpainted versions from MoM) but the paint jobs are quite dire- I could paint them better myself (many years spent on warhammer in my youth) but alas, life's too busy right now!
Either way, I'm looking forward to my first game with Kingsport!