One key advantage Vega has in several match ups that isn’t normally a deciding factor is character size: against large opponents such as Sagat and Rufus, Vega can combo into his strongest move, EX FBA, from nearly max c. strong range, which is great as not only does it aid in footsies, but it also makes for more combo potential.
A specific move Vega has that it is strong and opens up many combo opportunities is Close Fierce. This move has a 9 frame start up: meaning you shouldn’t use it unless out of a jump in or focus crumple. One characteristic this move does have though is numerous active frames on the first swipe: try this move as a meaty. After this move, Vega is +5 hit on hit: meaning he can st. lk, c. strong, st. rh, and c. fierce. The most damaging meterless combo Vega can perform from this move is a close fierce to standing roundhouse. The most damaging combo using EX meter he can perform is Close fierce to crouching strong to EX FBA. All of these combos do over 300 damage: add a jump in and it does around 400. These are very powerful combos. Coupled with Vega’s intense footsies and jump ins, they can be very formidable. EX FBA hit confirms are key to high level play: while whiffing them usually means you can be safe, it can be devastating in certain matchups; for instance, Abel gets a free ultra.
Another great move that opens up offensive opportunities is crouching forward: +5 on hit like close fierce. You can combo into EX FBA from c. strong.
The only problem with these two moves and their combos is that on certain characters, you are pushed back too far to lift them up with the EX FBA you are comboing into. Often it will go over their head and be inneffective… In certain matchups a 400 damage combo you once had is reduced to about 250. Here is a list of two combos: Close Fierce, Roundhoues and Close Fierce, C. Strong, EX FBA and who they work on.
Fei Long: Yes * timing is tighter
E. Honda: No
Zangief: Yes * only 3 hits
Guile: Yes * Only off jump-in / focus
Balrog: Yes * Only off jump-in / focus
C. Viper: No
El Fuerte: Yes ** Only 3 hits, only off jump in / focus
Gen: Yes * Only off jump-in / focus
Seth: Yes * Only off jump-in / focus
:hp: c. :mp: xx EX FBA
Fei Long: No
C. Viper: Yes
El. Fuerte: No
For most characters who can not get hit by :hp: c. :mp: xx EX FBA, c. :mk: , c. :mp: , usually doesn’t work. It will work on Fei Long, probably Gouken, Vega, and Bison from those distances. For Akuma, Blanka, Ryu, Honda, Elf, Dan, and Gen, use c. :mk: , c. :lp: . That will still combo.