Talent Level 1 - Astral Presence is good overall against all lineup's but playing against multiple Spell Damage heroes "Force Armor" Should be picked instead.
I should mention that "Power Hungry" is pretty good on "Tomb Of The Spider Queen"

Talent Level 4 - Only pick "Charged Blast" if you have experience with Li-Ming and if not go for the standard "Dominance" Talent

Talent Level 7 - Always "Seeker"

Heroic Level - "Disintegrate" is standard for almost every single Li-Ming Build but against a hero like "ETC" "Wave Of Force" should be picked you want as many interrupt for the "Mosh Pit" but if the enemy team hits 10 first and "ETC" goes for "Stage Dive" you could choose to go for "Disintegrate"

Talent Level 13 - "Cannoneer" could be picked up if you're not getting focused in fights but in most cases "Illusionist" just makes your Escape much better then it already is

Talent Level 16 - I always pick fireflies because of the lowered Cooldown and the faster Missile Speed the ekstra Missiles from "Mirrorball" is good but they rarely hit the same target and with "Astral Presence" as your level 1 talent you will never run out of mana you will always have for "Magic Missiles"

Talent Level 20 - "Temporal Flux" Hands down just upgrade that Ult :)

Talent Level 1 - "Aether Walker" but against team's with heavy burst spell Damage heroes "Force Armor" should be picked instead

Talent Level 4 - "Dominance" Always because if you dont kill people and get some HP back from killing them you're just gonna die simple as that

Talent Level 7 - "Calamity" Obviously

Heroic Level - I personally like "Wave Of Force" better then "Disintegrate" because of the mobility "Wave Of Force" give not to mention Crowd Control and a very low Cooldown

Talent Level 13 - "Illutionist" For Mobility in fights and the refresh on your "Teleport"

Talent Level 16 - "Diamond skin" is a no brainer it provide some self sustain and it keeps you alive in fights

Talent Level 20 - "Repulsion" Or "Tal Rasha's Element" are both good and is player pref but i would rate "Tal Rasha's Element" alittle bit higher