If you put your teleporter in an advantageous position but where it isn’t too easily in LoS of those who can destroy it, its value will go up immensely with these changes.

The moving platforms on Volskaya, the buildings on the middle of Hollywood, Route 66, and Dorado, the upper ledge at the end of King’s Row, all those high ground places where normally only one enemy stays while the rest are more down to contest the objectives, now your entire team can go up and reliably hold that ground while the enemy has to get an angle on one of the teloporters to stop it without the Sym having to constantly maintain it.

Imagine having a teleporter behind the choke of Volskaya and the exit on the moving platform. Your Bastion can go up and ride for days and if he gets low he presses F to escape for quick heals and then goes back instantly. Or just waiting for the portal to go around and lobbing a D.va bomb through it at the right time giving the enemy no time to react.