Trilogies I must finish

I’m to use this post as a log, I’ve just finished MW3, great Price full on action… what to finish next?

Trilogies I must finish
Saints row the third
Gears of War 3
Forza 3
Marvel vs Capcom 3
Skate 3
Battlefield 3

Ones I’ve completed
Fight Night Round 3
Halo 3
Fable III
COD modern warfare 3 [15/9/12]

Not quite there yet

Crackdown 2
Bioshock2
The Witcher 2
Army of Two (see what I did)
Mercenaries 2
Blazing Angels 2

Past it
Soul Calibur v
GTA IV
Tekken 6
Supre Street Fighter iv