Pathfinder's Mythic Adventures sets out rules for so-called Mythic characters. Within this ruleset is also an definition of Mythic spells. They say the following about this:
Mythic spells draw upon the caster's mythic power to create more powerful magical effects-mythic fireball sets affected creatures on fire, mythic mage armor can negate critical hits, and so on. These spells aren't separate spells you gain as a spell known from your spellcasting class, but rather mythically charged versions of spells you already know.
Basically, Mythic spells are existing spells but made more powerful to appear mythic. In general it is my understanding that Mythic spells are more and better of the same rather than gaining more features. A mythic fireball for instance increases in damage and can set targets on fire which is in line with the original spell. A mythic fireball doesn't gain energy drain which could be seen as an extra feature.
Since Mythic Adventures focuses solely on the core classes of Paizo, Psionics is sadly missing. There are plans to introduce Psionics as Mythic as can be read on the forum of Dreamscarred but that will not help players who need some guidance right now.
The power I am interested in augmenting is called Mind Thrust which has the following description.
Range: Close (25 ft. + 5 ft./2 levels)
Target: One creature
Saving Throw: Will negates; Power Resistance: Yes
Power Points: 1
You instantly deliver a massive assault on the thought pathways of any one creature, dealing 1d10 points of damage to it.
Augment For every additional power point you spend, this power’s damage increases by 1d10 points. For each extra 2d10 points of damage, this power’s save DC increases by 1.
If we take a look at the properties of all the Augmented Mythic spells we see that most mythic versions of spells receive a damage die increase. Given the fact that Mind Thrust uses a 1d10 die, 1d12 would be the logical next step. Or perhaps 2d10, doubling its damage.
But for a mythic version of a power this is too little. Areas where this power would excel and really gain its mythic status would have to be sought in the saving throw and the range. Unfortunately what we also see on the Augmented Mythic spells page is that none, unless I have overlooked, modifies the saving throw. There is only one instance: The magic missle mythic augmentation loses it's spell resistance and becomes unblockable. But magic missle did not have any saves to begin with, making it not fair to compare to this psionic power.
My question to the RPG Stackexchange is:
What would a balanced Mind Thrust power look like given the Augmented Mythic spells as foundation?
It is too easy to overpower but also underpower this. Asking this question here, where many people can comment, would hopefully bring a general accepted and balanced version of this mythic psionic power.