Suggestion: Season 31 and movement, stun, jamming, minimap, and more
It's not my call and not mine to judge, I also don't play these legends, but I would suggest playing around with stunning fast movement (no stun if you stand still, sneak, or walk) so as to counteract movement legends like Octane or Bangalore rather than just stunning everything. I've had Crypto and Seer chase me plenty of time, I've had Pathfinder and Valkyrie chase me, and granted it can be a bit annoying trying to get away from them, but it's not overpowered. With such characters that stun you through abilities (not through objects like Wattson's fence or Caustic's trap), it might make some sense to stun fast movement.
Revealing player movement and position makes sense, no need to nerf, Crypto's jamming of the minimap could probably last longer (20-30 seconds) and also jam pings, fences, tracker darts, as that is far more dangerous than just taking shields (which could also be tied to stun, run or move fast and you're stunned and lose your shields, stay slow or stand still and you're not stunned and don't lose shields).
I'm pretty noob--no, I am a noob--when it comes playing those legends, but some legends do seem a bit underused or badly utilised. A few times some changes have produced clearly overpowered legends, but I'd say that for the most part they are underutilised and not always differentiated or specialised well enough.
From what I've seen playing against and how my team mates play against Crypto, Seer, Wattson, Caustic, Conduit, and against similar abilities, Crypto's recent buff has been hit and miss. Most of the time we've just healed shields (granted, that distraction has its use in keeping a team occupied, "suppressive fire" in a way) but countering the beacon, minimap (including fence, trap, dart), and pings has been far more interesting than a simple shield nuke. Granted, annoying and if played right that's a big disadvantage and a potential team wipe, but other aspects is where I've seen something interesting emerge... but never quite fully. It's like the play is right there on the tip of my tongue, but never allowed to be spoken.
It might be worth going over movement and awareness a bit more, with potential for more subtle tactics between the legends.