Too often, I'm seeing a player go down, teammate(s) rush to revive...and sit there throughout while under fire. It's less a problem with a Titan barricade or a cloaked Hunter, but still, [you can move about during the revive]. It's a short leash, but at least you're not sitting in one spot and eating fire.
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Optimally, rush up to them, hold the revive to start it, and either
1) circle around them, or
2) run a little past them (while faced perpendicular to anything shooting at them) and moonwalk-revive across them so that anything shooting at you will likely be shooting at where you were.
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You can slide & revive, use that in Trials. Should work in pve.