Double jump â probably designed to pair with the other jump talents. Full jump build provides (conditional) movespeed, spell armor, refreshed shurikan stacks. Having the extra jump (in conjunction with either lvl 1 talent) also opens up more ways for genji to get in and out without needing to waste swift strike if heâs really stalling for a finisher.
Steady Blade â This hasnât been touched since Genji was made, so maybe it was a bit better when Strike outright granted resets on itself for getting the immediate damage (esp with dragon blade) rather than risky the delayed hit. However, even at its best (60%) it ends up dealing less damage than the other mod (which is like 65%) so, it seems to be there to give the illusion that he has 3 options at every talent. Itâd be better (imo) if it was an aa mod where hitting heroes increased his aa damage or something. Genji has zero aa talent mods and that seems like wasted potential imo.
Rapid charge â as was posted with the âfear support canât help himâ it is a decent failsafe if fenix takes Diver Power. That shield is going to fall off eventually, so having a healer to sustain the shield, or recover it once its gone, could be useful if people are playing healbot alongside a fenix.
Blaze meltdown â Iâll pair that up with the lvl 1 talent for unstoppable if Iâm against stitches, diablo or garrosh. Lotta players just try to isolate whatever hero they can, while other ally players will be as far away so long as gorge/toss/etc are on cd. Once someone is tossed, they can move in and fight without fear of getting grabbed themselves, getting the ride to the of the enemy team applies the attack debuff to the squishy team, and increases blaze ability to sit in the fire before hopping in the bunker or walking out.
Unrelenting Strikes: Best I figure, the ability is built around its lvl 20 power. By then Qhira can spec into an aoe stun on her swing that can then be directly comboed into the silence at 20, which then about ensures the end effect mass aoe disable and bleeds. Thatâs the thought process anyway 
Turrets: Having a higher cap can be more turrent spam w/ his Fist talent to keep the turrents up for gazlowes that play away from their turrets (so they wouldnât need the extra range) Similarly, turrent lazers at 20 benefit from either setting out more turrent initially, or just lazer build, can benefit from having another turrent to scrap for cdr to get lazer up again.
Egg Hunt If you set eggs during fights, people will totally attack them. Broken egg triggers slime, so that gives a freebee for building the quest. Add on the puffer slime, and murky is just a slime-summoning monstrosity! 