There's a clause right now in the onslaught sniper that prevents you from ever dealing more damage than a normal blast with its own effect modifiers would, save for the multi-hit onslaught blast bonus.
An onslaught blast can deal no more damage to a single target than normal for a blast of that type from a kineticist of the onslaught sniper’s level (for example, a 7th level onslaught sniper using a simple energy blast cannot deal more than 4d6+½ Con to an individual creature with their onslaught blast, plus whatever effects might alter a kinetic blast’s damage)
What's the intent here? It seems to have been an accepted suggestion, from the comments? Because if it's to make sure nothing ever deals as much as a regular kineticist would have, it worked. The entire archetype falls on its face for damage as soon as Empower Metakinesis comes online, since the archetype does not get abilities that would improve a kinetic blast's damage, just more blasts, and those just hit a damage cap.
Against multiple targets you're better off using regular form infusions to pull it off as well, you were going to pay the burn costs either way, and Twin Metakinesis isn't capped at "but just the first blast gets to do any damage".
I love the style and feel of the onslaught sniper over all, but that limitation just seems to spit on it and makes sure it's a trap. Am I missing something here?