Do I transport the DTPs from Development to test and production, or not?

Dear masters,

I am at a point in my project where I need to take a stand on whether to transport my DTPs from Development to Test and Production, or to just build them all over again in each system.

As I can see it, a pro for buidling them all over again is more flexibility on the DTPs in each system. Frequent changes might be needed here.

I con for building them all over again in each system is that then I'll have to build the process chains in all systems as well. (On the other hand I think I need the Process chains only in production and can build them directly there).

Can you help me with this consideration? Are there any important factors I have not considered? I am leaning towards not transporting DTPs.

Regards Silje