Howling Banshees: AP3 nerfs them a tad, but then they never excelled at taking on terminators in my opinion Acrobatic is nerfed a bit as counterattack has to pass a LD test now, but their LD is very high so it is only an extremely minor nerf. Still good Marine hunters if backed by a psyker, still in desperate need of a new codex entry.
Please tell me that I'm not the only one that has seen through the facade of GW's RAI attempt with the power weapons. I've already made a mold of the 2nd ed banshee exarch's power axe and I'm currently waiting on the faq before all of my banshees are fitted with power axes.

Sure they make you go at I1, but banshee masks make you go at I10. (FAQ needed)

Then they add +1S and are Ap2. Suddenly - for just a bit of hobby work, Banshees are possibly the best CC unit in the codex, and maybe the game.

Maugan Ra: Same as before, great if you can spare the points but unlikely to be worth it attached to dark reapers.
Does the Maugetar count as a Axe or Sword?