It’s hard to think of a worse heavy ender where there isn’t atleast a better non metered substitute. Like DP are bad Enders, but you can just use tatsu enders or extenders for much better stuff.
As an example of how bad hk legs is… compare it to kens hk tatsu:
It does more damage iirc, it knocks down, it moves him forward on block, it corner carries way more and it’s way safer.
Now of course chun has shit that ken doesn’t so it makes sense and comparing them isn’t necessarily comparing like for like, but having said that, hk legs is still glaringly weak for literally no reason. Like I get that they don’t want chun getting cr.mk xx hk legs as a an easy wiff buffer all day. But there’s still no reason to keep it from knocking down, or leaving her closer on hit, or doing more damage etc.
The onky reason I can see it’s weakness is as a pre nerf to force her into the metered conversion or the tough execution conversion.
Personally I’d just make it do the same damage but KD, and make it so that she can’t throw/meaty pressure the opponent midscreen on backrise.
Literally the only problem this would create is giving her an easy low execution meterless KD in the corner that she can pressure off of.