First off, stop comparing Li-Ming to Valla.
But then you go on a list comparing her...
Li-Ming's autoattack damage is very low. 138 DPS at level 20. Johanna deals MORE DPS with autoattacks than Li-Ming, so does Stitches. Jaina does 195. Kael does 212. This is significant.
Johanna and Stitches are both melee. I'd hope they do more damage. Jaina and Kael have no escapes to balance their frontloaded burst.
Valla deals 332 to 400 DPS, untalented.
She is also an AA hero basically, so...
Li-Ming's mana pool is so abundant because she can't deal damage without abilities at all.
Well, yes, she is an ability oriented hero...but I don't think I've had my Li-Ming buddy ever actually care about his mana pool.
Li-Ming's winrate is below Kael's in Bronze, Silver, Gold and Platinum. In Diamond and Master it's slightly above. This lends credibility to Blizzard's claim that she is a high-skill hero.
It will go up in the lower ranks. Furthermore, she is not a "high skill hero" despite what Blizzard thinks- this is not Invoker or Dota 2's Chen, or Meepo. There is nothing complex about Li-Ming. It takes about 30 minutes to get used to her "mechanics" of aiming MM and AO. Abathur and Vikings are probably the only "complex" heroes in the game - each requires arguably much more skill and effort to play effectively.
Missiles are hard to hit consistently (3+ impacts) without some form of CC affecting the enemy.
Disagree completely. Preaiming and just overall skill/playing the shit out of her makes this a nonissue.
each of her skillshots can be FULLY blocked by the frontliners.
And they do an absurd amount of damage, which can fuck your frontliners before they even manage to get into the enemy team's face.
Once Ess of Johan is addressed, the typical Li-Ming build has NO CC until level 20. Jaina has one of the best soft-CCs and Kael has an outright 1.5 sec stun.
According to Blizzard and your previous comparison of KaelThas, you either get Damage+CC or Damage+Escape. Li-Ming gets Damage+Escape. Kaelthas (and Jaina) get Damage+CC and all they can do to "run away" is spam right click....unless they take bolt at 20.
Wave of Force feels extremely lackluster before the level 20 upgrade, and Disintegrate might be slightly too strong, adjustments to the ultimates are needed.
Wave of Force is anything but lackluster because displacement is very strong in HoTS. I find WOF to be the autopick, personally, esp. since Tal'Rasha is a given at 20.
Also I honestly think Magic Missiles should deal 75% or 50% damage to structures.
Yeah her damage to buildings is an issue all on its own.