Slovio seems like a good idea and easily understandable and all, but, at least to my eye and ear, it's much uglier than any living Slavic language. Is there any way the esthetics of the language can be improved? Or do others not consider this a problem?
What makes you believe, that Slavic Languages are, in Word and Letter, ugly? Tell me what is ugly on the Slovio writing. The way of speaking is to a certain extent up to you. You do not have to "rape" your tongue talking Slovio(as in other foreign languages). I like the sound of MY Slovio.
Every "Writing Picture" of a language with some regularities has a beauteousness of its own - after understanding a tongue, you will dicover it.