This has been discussed at great length already and I don't really want to re-run the whole discussion, but I do want to just point out:
1) The suggestions platform is a good source of ideas and we do implement some of them - in the ~9 months the current platform has been up we've shipped 12 suggestions, which is in fact more than one a month on average.
2) We have to work within the restrictions of the suggestions platform, so we can't always make customisations that we want. If you're thinking "why doesn't Scirra make their own suggestions platform?", then that just adds to the problem - add that to the several years worth of work already proposed.