I'm sure if they got 3 or 4 simple emails a day, it would happen.
13 episodes is nothing, they could probably handle that with a 2-disc slimline keepcase release. Very little would be involved and it wouldn't cost much to produce either.
If anyone is remotely interested in seeing these cartoons again, even just a couple, write to Hit! A short and simple email like Jake sent is more than enough, it doesn't take more than 3-4 minutes of your time and it would help in persuading Hit! that there is a market for people who want to see these again. I'll even take a simple 5 or 6 episode compilation!
Anyways, I'd urge more people to forward an email over asking about these cartoons. Look what happened with FR... It can't hurt.