No, bud. You're not going to keep updating this file with newer, better stuff. Wanna know why?
Because there's a score attached to it. If you submit an updated file, you have a score that was earned on the old version. Why submit a new file and try to improve your score when you can submit new and start from scratch and hope for a better score? Now you see why no one cares about your promise to update with something better. They know better, but now you're probably figuring it out since I just told you. The score on this one will probably drop since it's a test and has no plot, storyline, or music, and is only about 4 seconds long. By the time you're ready to "update" this, the score will be such that you won't want to bother with this any more.
The "eye candy glow effects" are a good idea, but there's a reason they're not used. When you're at 30 FPS and there's a lot of activity on the screen, it'll cause lag in the movie. It's a good idea, but it causes problems, so it's not used.
The animation was good. It was fluid, but then again, that's what 30 FPS does.
And people ARE reviewing your flash. It's a test, and the Portal isn't for tests. Put them in your Dumping grounds. Then, post the link in a news post in your profile. That's what it's for. Your fans will get it there. Don't post them to the Portal. That's not where they go, and it encourages an endless stream of noobs to do the same. It'll also fill your account with blams or low scoring tests. That's not really what you want, now is it?
So, yes, keep working toward something great. But, no, please don't submit tests to the Portal. That's not what it's for.
Good luck, bud. :)