Hmm it seems to me that Sasuke may not get too many more abilities via EMS, at least when it comes to jutsu unique to him. I have thought for some time that someone who obtains EMS gains both the MS abilities of his original MS in addition to the MS abilities of the one's eyes that were transplanted. In Sasuke's case, this would mean he would not gain anymore unique abilities. We do know however that a new eye technique will always be gained once EMS is obtained, we just dont know yet what that is. Perhaps it is Tobi's space time teleportation that is gained from it, but we don't know for sure.
An old theory of mine is that Madara had access to 6 unique MS abilities having obtained EMS, a combination of his original 3 and Izuna's 3. This lead me to believe that perhaps the 6 paths of pain (not the 6 paths, but pain's 6 bodies) each represented one of Madara's each 6 MS abilities. Sound possible? If Madara did indeed implant his EMS in Nagato, maybe Nagato's strongest Rinnegan abilities were Madara's original MS abilities. I know its far-fetched, especially since explosive devices are among those 6 abilities, but I just thought the possible correlation was there.
Again, in regard to Sasuke's EMS, I doubt he will gain access to more than one new ability.