I played two Tip Offs and one Flying Fortress Redux in the past week so they are still around. Got them all to 200% and able to apply the tripler app.
However, I agree that ruby ops are few and far between.
The high ruby Spec Ops in R31 and R32 are very scarce.
Those are usually always active with suicide missions and have come up empty for about a week.
In fact, my last level update filled my game cash to the max so it had to be bled down by buying Combat Packs.
That ended up with a ton of gold.
So I ran a suicide mission on every Spec Op from R32 to R12.
Gordon Bullard & Company