Sorry for not introducing myself earlier as I am FT reader and quite lazy poster (mostly on Miles & More forum) for a while here.
I am Finance / Banking IT Consultant frequently traveling and already for almost 2 years living between RIX and NAS. Mostly traveling on AC, LH, UA and AA for short hops between MIA and NAS. This year made LH SEN jumping up from LH FTL earned last year.
Most frequent airports - RIX, FRA, MIA, NAS, sometimes YYZ or EWR and before used to frequent also WAW and LCA. Some may say I am crazy to frequent 2 one of the most dreaded airports in many FTer opinion, but I do not find them very bad