No plans for the cloud solution so far. I figured it needs a community, so a lot of it has to be free for non commercial use. For commercial use I figured the price isn't going to be an issue. Probably there's more tweaking to do there. I'd love to get some thoughts on it.
Have you considered turning this into a web based SaaS product? (upload excel -> do fancy stuff -> export or save the result on cloud)
Is there any specific reason for the current licensing/revenue model?