Of course the other Themes will not be deleted :), you can still use brooklyn, or use both.

I actually appreciate the Brooklyn theme buildings being low residential; it gives a starting city a very pleasant appearance, as well as forming an excellent transition between high density and "true" suburbs. It also prevents having to make multiple building themes that would need to be assigned to multiple districts in order to maintain a transition between densities. I think that only leaves me to ask; are the older versions planned for removal from the workshop?

No issues regarding functionality, but the brooklyn theme reached a point were I just cant fix the fundamental structural problems. All Levels having the same height, the theme being low residential, or that my New York related buildings are basicly split between two themes, just to name a few of them.

Why are these being reworked, were there issues with the older versions?