Thank you for sharing such good ideas with us.
We have thought about these abilities too, to make the developing of web pages quicker and more convenient.
Our team plans to make the previewing of the Visualforce pages possible inside TWS and in a browser by right-clicking. Additionally the same options will be implemented for the Lightning Applications and Components.
Our deployment functionality will be improved also.
One more request, which has a place in our working plan is related with the Credentials Manager. The credentials that you enter will be stored in the Credentials Manager and you wouldnâ€™t need to specify them every time.
Unfortunately all the work on these improvements will be started later on, after mid-winter.