We just hope you will order your boards through circuits.io :), but we will not tie you in. You can download your gerbers and have your board produced elsewhere.
Gerbers are fine for sending PCB layouts to board manufacturers - but what about my schematics and my library of footprints for parts I've used before?
Traditionally EDA tools are weak at importing and exporting this sort of thing which makes moving between tools a total pain. Could be inconvenient if your commercial offering had a price increase, presuming you plan to have a commercial offering (it's not 100% clear from your website; I assume you're planning to make money somehow?).
As you have said, tools in general are weak in importing and exporting, chances are you won't be able to import it into the other tool, anyway. As long as there's no standardized format for exhanging this info, it's hard to support these features. In circuits.io at least you benefit from other peoples work on component libraries.
True - but non-cloud-based software will keep working even if the developers go out of business or have to increase their prices (unless it has DRM or is leased by the month) - my 10-year-old copy of Altium Designer still works just fine.
Thanks man! Our dream is that you guy's can fully focus on the creative part of your project. We want to do the boring part: component sourcing, getting the PCBs manufactured, getting it all assembled, testing,...
We are working hard on a better footprint editor right now. It will probably be released in one or two weeks. If you have trouble adding a footprint you can always send us an email and we'll add it for you.