First of all, I'd like to see spread return to scopes or rather, equippable scopes. I'll deal with the issues regarding weapons like the Stalker Bolter's scope and such in their own thread once I get around to it. The bug where toggling between a scope and iron sights fixes your spread back to zero no matter how inaccurate your crosshair was also needs fixing, ASAP. That is incredibly cheesy and incredibly broken.

This spread should not reset while in the scope without an increased reset period, say at least half a second before the delay wears off and about a full two seconds before spread resets.

The scopes should reduce the spread increase per shot while firing by at least a third - this makes it viable for burst fire and tap firing and even a short full auto spray. The limit of this spray before it starts rapidly spreading out should be decided by damage, for bolter weapons - the spread should rapidly increase to beyond hipfire levels of inaccurate once you have fired the equivalent of 300 damage worth in shots.

For a bolter this would be about 8 - 10 shots.
For a shuriken catapult, about 15 shots.
For a shoota, this would be about 8 - 10 shots.