Ok, you got some valid points ... We would definitely be willing to add some optional road-blocks to prevent an average visitor from downloading images, or put them off the idea. There are a few hazards though ... First of all though, let me quote what has been said in a general discussion of the topic:
James Bruce wrote:Disabling right-click is one very good way to seriously piss off your users. Not only does it prevent right-click -> save image, it also prevents right click-> anything.
Ref.:
http://www.makeuseof.com/answers/preven ... e-webpage/
The topic above is generally for desktop browsers, but I think for mobile devices, you are pushing it even further. People are used to having their context menu appear somehow in a webpage, and here we are gonna take the liberty to just entirely block it.
Furthermore, it is a technical challenge, because general javascript stop-right-click does not generally work for mobile devices, which each have their own proprietary method of blocking the context menu (if possible at all).
It is however possible, and there are also a few other concepts that would add on to make it further difficult to grab any images. We will try to have a basic solution ready for next release, but it would be a few more weeks ...