All members of that specific race have been known to be 100% force sensitive, canonly, meaning that if they were to be added to the game, it would be proposed that they should be like their selves in canon - as other races in SWC are -, and then we'd have balance issues.
To make it clear: the 'Yoda' race, among other 100% force sensitive races will not be added to SWC at this time, nor in the foreseeable future, hence the sticky thread in the race suggestion forums.