I have advocated a return to the better technology of the eldar for a while now. The shuriken catapult plain sucks ruleswise and in use. It used to be better than a storm bolter etc. Eldar technology is supposed to be better than, not equal to or worse than but we still claim it's better etc.
I was thinking, what if storm/defender guardians worked differently?
Storm guardians are 'assault' guardians, but the only reason they really carry swords is because of the 40k mindset that assault=melee. But you can assault things using other weapons just as effectively.
So my idea, as much as I'd like the catapult to go back to its earlier days, is this:
Range 12" S4 AP5 Assault 2*
A model equipped with a shuriken catapult counts as being equipped with two close combat weapons in melee**
**rationalise it anyway you want to - a carbine that is fired from the hip IN melee, the weapon is so light it can be wielded one handed etc.
Wargear: Lasblaster (or whatever rumoured weapon option people have been claiming they'll get)
Wargear: Shuriken catapult
Now the shuriken catapult's current stats fit its actual role - used in close assaults by guardians that actually WANT to get into melee. It creates synergy between the weapon and the unit.
Personally I'd just like to see the catapult go back to at least an 18" range for no other reason than eldar technology should be superior to imperial technology which it currently isn't (what imperial tank weapons require two vehicles to produce a single powerful shot? None, because they can build a weapon powerful enough on a single tank and have two of them...).
But I do like the idea of the shuriken catapult guardian being the 'assault' guardian.