Keeping you original planet?

I was wondering if the high ranking players keep there first planet or trade up later on? just curious. =]

Oh i always keep my homeworld. Unless tactically i am getting bashed by players around me i always keep the homeworld and turn it into my strongest planet. I could never really get ok with the idea that im gonna destroy my first planet.

Like if I move my planet to a new location will it still be an ice planet? Im all about apperance and was hoping it could change to a summer world. lol also does anyone know if that is the only two types of asthetic apperance? summer and winter worlds that is. or are there also dark and brighter worlds as well? just curious! ty! =]