For me I will just play the map I'm on now, Have buildt one structure with all the goodies to work with metals etc. Looking for a new place to build same thing but in a spot that is close to 3 or 4 different biomes for next update. As i will use same seed to start again but using new location.

Forgive me as my brain is getting older, but I do remember reading that there will be new structures or ruins at some point with one of the updates prior or with the Mistlands? If so, using same worlds after update may not spawn these and I would not be able to see them If I dont start new seed as each patch comes out.