Ok, I'll be the first to say that I LOVE this! I know its "just" breakout, but you've got all the important elements in there, some really cool powerups, clean, crisp graphics, and smooth play.
The level design is REALLY good. The second level is particularly pretty. Very well designed. The Level editor is very nicely put together, I like the fake window style. The only problem I could find was that the music sounded very low bit rate, I got a lot of hiss through my (admitedly VERy loud and Amplified) speakers.
All in all for a weeks work that is great
I'll actually leave this on my hard drive to play more when I get time.
As for features / suggestions to add, well perhaps an "easy" option thats at half to quarter speed for more frelaxed play, its very fast, which is great, but sometimes you just want to chill a bit and enjoy the thereputic tonking around of a ball
Also, I don't know whether you added this, but in some of my favourite breakout/arkanoid games there are enemies that come out of certain blocks when you hit them and walk around randomly till you hit them - in my all time facourit breakout clone "Cryst-Ball" for the Supervision, these are played by gormless looking Penguins