That's the thing though, Kenshi will never ever have a reason to give a shit about flying kick, enhanced or not. If you're gonna use meter it's probably more worth saving it for X-ray, perhaps just for the threat of it, even though it normally whiffs up close, it will hit Kenshi at any range, even crouching, and gives you a good chunk of unbreakable damage. If you have the life lead from there and Kenshi has to mount the offense, low dragon fire ducks under flurry, and it's a crap shoot as to whether or not TKS will get stuffed in a trade.
Also about reflect, I can't vouch for sure if this comes into play with Liu, but one thing I noticed that KH Cat does in the Kenshi/Kabal matchup is alternating the height of IAGB very slightly, making anticipatory reflects whiff and whiff punishes accordingly. Instant air dragon fire actually has slightly faster trajectory, so it's worth a shot.
I've personally had no problems with the matchup from Kenshi's perspective, but I still feel it's one of the more mis-approached matchups in the game, if not the most.