Shields will never happen. Each class is built around one weapon and that will never change. They'd have to revamp the entire game. As for saber pikes, they could happen but would clip and look weird because they'd just be held like a normal saber or saberstaff. Only way we'd get both working properly is with a new class entirely and the game simply can't afford that since they'd have to do an entirely new class quest line.
How would a saberpike look weird held like a saberstaff? As far as I can tell, all the animations work just fine with it -- the same animations are used for staffs and saberstaffs, so having a weapon that's regular staff on one end and saberstaff on the other doesn't seem like it'd be an issue. Just treat them like electrostaffs, with the same animations and the same resting place on the back and stuff.