It's probably to make matches go faster if a team is obviously putting too much pressure on the Spark. Though I think the Spark runner gets way too much for simply running, I don't disagree. But I think it's unfair that they can't use their Supers but have a Speed buff. The speed buff makes public matchmaking a nightmare, because the Runner gets overexcited and rushes faster than his teammates can manage to keep pace with. Then they're getting wrecked and the rest of their teammates follow close behind and get caught in the same chokepoint the runner got caught at. Rift is a terrible game for public matchmaking. But if Trials of Osiris placed a Rift on either side and spawned a Spark when a game takes too long instead of the current Control point in effect, that would be an interesting twist on Trials of Osiris for year two. Lore-wise Warlocks' rifts are the source of the game mode, so it would make sense for the Trials of [i]Osiris[/i] to have a little more space magic involved. (The way it will limit all other Supers from being used in PvP but Fireborn is basically unaffected unsettled me, however, but they're always going to tip the tide in PvP since bungie spoils them fanatically.)