The series doesn't have potential...
...but you do. Let me give you some advice, don't try to go for a series on your first try. Instead, work on small projects to further your flash skills.
Most of your scenes looked a little bland... and the perspective was a little shoddy. But things like the elevator opening looked really good.
Same with the people, the beginning guy (Big Boss/Solid Snake? ) just stood there, but the guard had good head movement later on.
You have a sly eye for detail, but the problem is you lack expierence. That's something that will come with time and practice.
One thing that was good throughout this flash was that you have good editting and timing. AKA you know when to cut from shot to shot without making a scene feel too short or lag too long. Except for the artistic flaws mentioned above, the trailer wasn't half bad.
If you keep at it, you can laugh at all the people who call your work shit later.
Best of luck :)