I’ll second the Leg. Binder recommendation. I have a Leg. Cat but have never used it, the Binder is just so awesome. 
Regarding allocation of points in Cataclysm, I go with 1 Flicker, 3 Helios, 5 Immolate. Let’s face it, everyone goes into FFYL at times, and that’s a heck of a nice bonus to getting up. 8/5 Helios still melts flesh enemies, and Flicker has never impressed me.
For the Harmony part of the tree, I’d move four points from Mind’s Eye to Elated. That synergizes really well with long phaselocks (Suspension) where you milk Wreck for damage. Personally I do a Ruin-Scorn Maya so I go all the way down that tree, but if you’re staying at 15 points definitely take Elated.
I don’t have a lot to say about Motion, since like I said that’s the tree where I only go to 15. Just be aware that Accelerate will complicate your usage of Pimpernels. I think a lot of people just put one point there so they can boost it with a COM if they want it, and otherwise it will have a negligible effect on Pimps and other guns that dislike Accelerate. I think people who go 26 Motion almost always do so for one of Sub-sequence or Thoughtlock, for what that’s worth.
Shields - Troubled covered the usual suspects. To me the Bee is a special purpose shield mostly used for fighting certain bosses. I haven’t gotten a Neogenator to drop yet, and haven’t started taking on raid bosses, so I mostly use just an absorb shield or an adaptive shield depending on the area. (Just hit 72 about a week ago
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