That was my reaction too, I really thought it was an accident that the electrostaves wouldn't allow activation of all the different skills. Hopefully they might reconsider their stance on electrostaves generating a limited move pool if enough Shadows/Assassins ask about it.

I wrote a couple tickets and got a response about this in game: I was told it's working as intended. Electrostaves are mostly supposed to be a companion weapon, but we can equip them too. I was also told if I think something should be changed to start a topic in the "Suggestion Box" forums. So I started one on this topic, if any of you would like to throw any support behind it over there maybe we can get this changed.

I've been wondering since I got my first electrostaff if all the skills that were no longer able to be activated when it was equipped were working as intended. Today I learned from a customer service representative that yes, indeed, that is how things are intended to be. My dreams of being the electrostaff jedi were crumbling with every word. But then-- Hope: I was invited to come to the suggestion box forums if I felt that something should be changed. And so it is that I'm here: I want electrostaves to work for all Shadow/Assassin skills. 1) They're stats are nearly identical, with electrostaves only having a higher minimum damage and lower maximum damage. So there's no real balancing difference between them, only appearance. 2) Variable appearance options are fun! This point is also why I'm continuously seeking new mods and armoring for my orange set of gear I assembled. This allows for more customization of your character, creating a distinct look for yourself. 3) Some people just don't like the way light sabers look, but like the play style of a Shadow/Assassin and this would allow them an alternative which is just as effective. 4) Obi-Wan used one for like, 30 seconds in the Revenge of the Sith.