Term "inactive" correlates with wagering. In order to keep your current VIP status, you just need to wager any amount in one month. Even one cent qualifies. IMPORTANT NOTE: This will not be a long-term definition of "inactive" for all players. But, after careful consideration, to be fair to Bitcointalk community, we have decided for Bitcointalk members (amongst the first 15 players), to keep this definition life-time. So, any amount of wagering during one month qualifies and keeps your VIP status.
I have to say this is very generous, so thanks for that. I didn't gamble before (I'm more a sports betting guy) but I developed an itch for that damn sugar rush thing when I tested your site.
The scatter thingies are all I can think about right now.