Some time back, I was in the market for similar sevices, I evaluated brace.io and site44. If I am not wrong, they both charge $5/month for 5 websites. As a user, I would not mind paying that, because if I want to quickly demo to a client, I would prefer a separate sub-domain/folder without having to pull my credit card for that.
Second, I was looking for minification and compression, great to see that you have added that feature.
Third, great to see that you have contact forms, the first obstacle where you might think of servers. I like brace.io's implementation.
Additionally I liked brace.io's admin and shipping workflow. Do you have anything similar?
You don't really have to enter your payment information every time you create a website. Once you signup, you can make a deposit for $3 and we'll charge you only when you create a folder in your dropbox (that too 1 hour after you create the folder in case it was done by a mistake). Also, even if you don't have any funds in your account your websites will be live, we'll send you an email to clear your invoices :) In short, all you have to do to create a website is create a folder with an index.html file. I am also the creator of http://getsimpleform.com which is a service which allows simple contact forms with akismet integration for spam prevention, it also allows you to use templates for the email notifications on form submissions. websrvr will have all that functionality and a bit more :)
Imagine if you integrate this with a future version of NEST thermostat or an integrated lighting, you can create different environments in a single room and change it on the fly.
An electrician working in a Hotel would be navigated to the right junction box.
You buy a new car and the manufacturer provides you with a virtual manual to find new controls, may be even basic repairs.