At the moment, we do have a way to mass-import new products from a CSV template file, which you can request by emailing support. We'll also be adding the Item Name to every screen of product settings, so you can always see exactly which product you're editing at any given moment.
I will have to ask Development if they have any particular plans to support mass-editing of products, but I haven't heard any mention from them about that sort of thing. The vast majority of our merchants are smaller-scale operations, and that is our target userbase demographic; developing a mass-edit apparatus would be a fairly massive undertaking of benefit to only a tiny fraction of our clientele.
Development prioritizes new feature requests according to broadest potential benefit and the simplicity of programming them into our existing codebase and algorithms. Because ours is a centrally-managed service that is shared in common among thousands of merchant subscribers, it's impossible for us to make a modification for one merchant that does not also affect all other merchants, so we place the utmost importance on maintaining bug-free stability for all merchants using our system.
Greater priority is given to popularly-requested features which many or most merchants could benefit from, and which can be written into our existing system fairly straightforwardly with minimal risk, whilst lower priority is given to features rarely requested and of benefit to fewer merchants, or which require substantial reprogramming or complexity that may introduce new bugs or instability problems in well-polished and stable parts of our existing system.