There's no point in a 7.62x25 Tokarev +P or even a Tokarev Super. If it isn't powerful enough as it is, then might as well just replace it with an unlicensed knock-off of the aforementioned 7.5 FK cartridge, which is already practically a Magnum Version of 7.62x25 Tokarev.
Besides, 7.62x25 Tokarev is already more powerful than the 3 major defensive cartridges, pushing anywhere from 390ft-lbs to upwards of 500ft-lbs, effectively beating Standard Pressure 9mm Luger and .45 ACP loads, as well as all but the practically worthless 135gr .40 S&W "poor-man's-.357-SIG" loads, all with better sectional density and a track record for defeating all but Level 3A Body Armor.
So what exactly would be the purpose of an overpressure variant of 7.62x25 Tokarev? It would just start to get into the realms of diminishing returns, considering that in Standard Pressure loads it already beats the established trio of common self-defense cartridges, and once you start getting too far above the energy of those cartridges, you're left with something like full-power .357 Magnum or 10mm Auto, impressive energy, yet so much energy that it has nowhere to go. Not enough to result in visible remote wounding effects, yet so much that without specifically designed projectiles, it'll just punch right through a target without expanding, or otherwise result in fragmentation, which only causes superficial tissue damage.
So yeah, we don't need no stinkin' +Ps, just a new gun to shoot existing loads out of, which are plenty hot enough as is.