We don't know that the Top14/Pro D2 licenses were exclusive- For instance, both USA were licensed in both RC and RWC2011. It's possible we could have two games with the licenses, or that it's a year-by-year process, rather than a four-year one (As, for instance, the RFU, WRU and SARU signed with HB).
I want a full-on manager mode where you have the option to change team and develop a varied career with multiple sides. Perhaps motivate us by having a trophy screen where we can see, for instance, we've won two Pro12 ***les with one team, a SuperRugby ***le with another but no international trophies, and we can do a Warren Gatland and go chasing them all. It can't be that hard to make, it's certainly less ambitious than many other requests on this thread. A working transfer market would be handy, too.