Symmetra's risen from the grave since her rework, but old issues still hurt her "marketability" to players; namely, her insignificant golden gun.
Yeah sure it's beautiful, but half her actions utilize the glove which unfortunately remains as the base color. Continuing in the same disappointment, every moment you'd want to show off your dedication to her... you can't. Her highlight intros don't show off your weapon, nor do many of her victory poses and emotes.
However, simple re-skins might make purchasing Symmetra's gold package more rewarding.
The first and simplest idea would be to gold-ify her glove along with her weapon. In-game, you won't feel like your purchase was a waste when you also get to wave around your shiny new glove. The change also allows for players to show off their pricey weapons without re-working any of her intros, poses, or emotes.
Ssgupta brought up a great point on the Battle.net forums to back up the idea.
Torb and Roadhog both have their hook and and hammer shown golden. They are not their main guns, but are secondary weapons and utilities that are a defining part to their character. Much like them, Symmetra deserves to have her glove be golden as her photon glove defines her and is used throughout the game almost as much as her main weapon.
Another route could have the developers change her 'buildings' to gold — her turrets, her teleporter, and potentially the center of her shield. While the idea sounds amazing, it may just be a fantasy. The Overwatch developers have stated before that they don't want the competitive mode to be too rewarding. Besides, if they implement this feature for her they'd have to do the same for Torbjörn's turret.