Unmasked Kylo - 1000
Allows for Kylo Ren to go into combat without wearing his helmet
Unmasked Vadar - 1000
Cosmetic costume from ROTJ
Undead Geonosian Soldier - 1000
Rebel Pilot Luke - 1000
Cosmetic costume of Luke in Xwing uniform
R2D2 - 5000
Allows for a non combat R2D2 to accompany you in battles
C3PO - 5000
BB8 - 5000
Ghost Yoda - 5000
Cosmetic costume for yoda
Cyborg Darth Maul - 5000
Cosmetic costume from clone wars
Lollipop Lightsaber - 10000
Changes lightsabers to lollipops for all jedi characters
Umbrella Power - 10000
Changes lightsabers to umbrellas for all sith characters
Slave girl leia - 50000
Allows for Leia to go into combat in her costume from ROTJ
This is just a few of the examples that they could have used.
Allowing for cosmetic items that can only be obtained at end game, would not only keep people interested amd give them something to play for, but it could also keep the super sought after items for whales only so that they could show off their exclusive status. This would being a much better balance between p2p and f2p, keep the challenge level equalised, and stop the alienating of lower spending players.
Although Grevious may not be as OP as he could have been, there is always the chance that they could add more characters later on that are shard shop exclusive that could shift the balance over to pay 2 win.