I status matched from FB Gold to DC Gold in October 2009.
Since then, the LH takeover has completed and matches appear to have become more stringent - it seems they now like to see a non-cancellable flight booked on BD metal before they'll match. You might also get away with showing several flights booked on other *A carriers - YMMV.
Good news is that FB Gold still seems to be a favourite FFP to match from, probably second only to BAEC.
There is little doubt that DC will eventually be merged into LH's Miles & More, but in the past couple of days BMI announced this will not happen in 2011. Depending on BA's long-term plan for BAEC, against which BMI almost directly compete, this might even extend its life even further.
There's some informative threads on this in the BD forum if you drop in there.
I can almost guarantee you won't regret moving - *A airlines, aside from being far greater in number and so flying to more places, IMHO generally have a much better on-board product than Skyteam and there are genuine alliance benefits (such as free bags irrespective of carrier on internal USA flights). You'll also get lounge access on domestic US flights, which is no longer available since the Northwest arrangement ended.