I like the concept. I am thinking an earth-tone green may be better for the feel and brand. Overall this is a great baseline for the design. Well done.
-I think it would be better without the plane. -I'd like to see different text used for the letters -I'd like to see the M and D capitalized (MapDreams)
This looks really good. #21 is the best so far. I'd like to try making the brown in #21 earthy green. Also, I think their should be one more "bubble" before the cloud with the earth.