I know that Controllers aren't much popular when talking about PC, but when there's a bug, it's a bug
I you die while doing Conclave, you can't do nothing on the respawn screen if not waiting the auto respawn timer. Can't change loadout, can't prematurely respawn. The only way I have, as a user of Steam Controller, to change loadout, is exit and re-enter a game.
For clarification, for "Respawn Screen" I mean the one visible in the spoiler.