Yeah...this weekend seemed to be one of those times. Lots of less than impressive servers with bad admins or hosts. It was boring.
BL is usually good around major holidays or seasonally, i.e. the beginning of summer. Lulls between the two produce a lack-luster server list...not to say that all servers currently running are bad.
Can you imagine how difficult it would be to administrate this? You would pretty much have to pay the admins for all the work they would need to do.
Also I feel like you would either need to invest in your ISP's premium service or buy a freaking server computer to support all the bandwidth and other crap coming and going while hosting. Just imagine all the emitters, brick lag, explosions and such that multiple minigame modes would yield.