Imho they should add this option but with some limitations:

1: it should be doable ingots only.

2: it should be possible among servers of around the same age only for moving to another region (to be clearer, if i am in server 298 i can move to server 299 or 297, not to server 295 or 302)

3: among the same region you can only go in older servers than yours with the option to eventually go back to your original server.

4: the number of portings should be limited to 3 per year.