Yeah numbers tweaks are precarious on symmetra
In terms of qol, they should incorporate communication about the teleporter somehow.
Symmetra has audio cues when she puts up a teleporter. "The path is open." or something like that, I believe.
She's my second favorite character but her utility isn't enough to trump Mercy, so I don't play her as often as I'd like. Personally, I'd still like the direction indicators on the teleporter.