Of course it is possible. However you should consider that a bidir RP does not require a physical
system to be used, its just any arbitrary point in the network. This is both good and bad for what you
want. Good, because it makes RP relocation simple: there's no need to physically reconfigure a router.
Bad because there's no central place to collect the information you are interested in.
Of course, you are really interested in just Sparse-mode and not bidir. IMHO what you want is
a "two-stage" effort. The source and/or receiver DR registers with a "RP-allocation server" (ie something that
does the calculation to determine the best location of the RP) and then a redistribution of RP
information for the specific multicast group. (ie a /32)
FWIW, the bootstrap router protocol could quickly redistribute the /32 RP map within an enterprise.
However, doing this across PIM domains would be problematic.
So, you have a potentially good idea, but it depends on the continued deployment of sparse-mode
(ie some, like me, feel sparse-mode is no longer useful and should be replaced by SSM procedures)
and you need to define a protocol that is going to be rather complex, especially if it is used interdomain.
At this point, I do not feel you'll get any vendor to implement it. Just an opinion.
