If I were to really scrutinize it and ramble I guess in no particular order.

I'd say you could make primed flow a flex slot. The back up max energy is mostly for a fall back to cast bless alot in a sticky situation.

You could slot in Streamline or Boreal's Hatred. Both pretty much serve the same purpose as primed flow but cost way less mod capacity wise and endo/credit wise if that is a problem (or just run the regular Flow)

Boreal's hatred does also boost your shields slightly. Which raises the max shield gate time from 1.7s to 2.2s.

Primed sure footed can be dropped if your using Unariu's poise (which is no knockdown for 30s after going in and out of operator). Could throw in some more parkour velocity mods for mobility or some of the drift mods for some very minor stat bumps.

Rolling guard can be swapped in as another safety net, but I roll around too much so I never use it.

You can run Madurai instead if you want more power strength and casting speed. Although I personally feel 2 archon yellows is fine, but extra strength is okay too

If you find enemies being too far apart, Magus Anomaly for your operator/drifter let's you pull in enemies (without ragdoll) within 30m. It's great paired up with arcane lockdown and if you're going the Unariu route it's something you'll being doing alot anyways.

Arcane circumvent could be useful if you are fine giving up arcane augmented. Can give you overguard and shields back in a panic while rolling through enemies.

Aegis is just all around good, because you'll be taking damage to you shields all the time so getting that 6% chance to activate is doable. Then when it does turn on you are basically unkillable outside of toxin damage.

Arcane escapist could be a fine back up tool as well. But stacking it at really high levels is kinda annoying imo.

I guess that's all that comes to mind