Just as another data point, I also would like to see it in Webstorm (or even an expanded version of it). When I'm using SDF to transfer a client from sandbox to production for go-live (so we've likely been making a ton of configuration changes in Sandbox that haven't yet been pushed to production), I have to pull up SB & production in two different monitors and manually compare the account configuration settings and change them one by one. Granted, there are still settings like accounting preferences where I have to do that anyway (and it would be cool if those could also be part of SDF!), but it saves me some time/effort. It'd be easy to accidentally mess up if you do it manually so I prefer to automate it as much as possible.