I personally opt for Invictus in my build but that’s all personal preference. If you use Cryo a lot then it’s quite devastating to finish with. Its base element is Explosive plus whatever elements it is charged with from absorbing enemy fire.
The primary advantage of United Front is increasing your shield capacity. Pair that with a Turtle Shield and you’ll see a significant increase in your shield reserves. The shield recharge itself is pretty useful especially once you start drawing aggro via Prepare for Glory. You’ll get shot from all sides. If you aren’t investing heavily into Conduit, or even if you were, I would never consider United Front redundant.
Think of Storm Weaving as powering Maelstrom. Their potential is far greater than Omega-Senshu and Mercurial. But you should explore everything and find the style that suits you.