Why would you need specific features? You wanted to develop desktop apps, not gnome plugins, right?
> Just checked Genie and Vala IDE web sites, they still need to do catch up with what Borland was doing in the 90's, let alone modern IDEs.
If you want RAD there's Glade(https://glade.gnome.org/) + GtkBuilder.
Desktop apps that expose the features that make the platform unique.
> If you want RAD there's Glade(https://glade.gnome.org/) + GtkBuilder.
Not even close to Delphi and C++ Builder and we are talking about 90's here.
If I upgame to Blend + VS, XCode + Playgrounds, Android Studio then there is a lot of catch up to do.
Software development stack for desktop apps are all about exposing the features that make a platform desired to be used.
> So which other DE on GNU/Linux does provide the same tooling and platform abstractions as KDevelop/Qt Creator do?
You answered:
> Why would you need specific features? You wanted to develop desktop apps, not gnome plugins, right?
Clearly KDevelop and At Creator expose GNU/Linux specific feature.