I will preface by stating that I find it quite curious the idea of touching up Aegis Storm and Hildryn Prime never crossed the minds of the development team, especially with how outspoken the community can be.
I will put this into a few bullet points and pray that my comments are at least seen by a few; Recently many people have pointed out the lackluster quality of several Prime Accesses, namely with Baruuk Prime's and Gara Prime's, and I'd argue we've reached a breaking point with the most recent one; Larkspur Prime has little use in Steel Path, Archguns have even smaller use in most game modes; Shade as a sentinel has some critical flaws which make it harsh to use, namely double-jumping breaking cloak; and the main event, Hildryn, has some critical points of failure which make her kit a tad jarring to use.
My criticisms, whilst few, are the following:
1: Balefire lacks the status and/or critical chance and damage needed to compete with other weapons like Ivara's Artemis Bow, or any other weapon in our arsenal for that matter!
2: Aegis Storm disrupts gameplay in such a manner that it is almost never considered in a build, thus making it a nigh-required Helminth slot.
In my opinion, the following can be done: Balefire can be buffed with critical chance or status chance, giving it a competing edge with other weapons, and Aegis Storm can have the following changes made to it:
1: Balefire's charge is removed, maxing out its strength and allowing it to auto-fire.
2: Pillage is allowed to be casted in Aegis Storm, with a 5 second cooldown between casts, starting from when the aura reaches it's maximum range.
3: Flight speed is increased, scaling off power strength.
Now this isn't meant to be undue criticism towards the developers, but I do hope they put a bit more thought into touching up and reworking other Warframes and weapons by the time their prime comes around, I believe people would be very grateful if this occurs, and I look forward to the future if my ideas are to be adopted!