There is an increasing number of useful tools bundled in AppImage files. I also started distributing my first Linux application as an AppImage. AppImages have striking advantages for users as well as for developers. Unfortunately desktop integration is not supported very well (i.e. K-Menu integration, moving the packages to a predefined folder, viewing a list of packages, removal). This could be done best one the distribution/desktop side. Please add active AppImage support to KDE Neon.
Let's get inspired by how the Mac handles applications using drag-and-drop in the file manager. For example, if the user moves AppImages to defined locations such as /Applications or $HOME//Applications, then they could automatically be integrated into the desktop. And the integration could be removed again once the user removes the AppImage. This is what I have implemented in the optional appimaged daemon (not part of KDE), although I agree, proper integration in Neon (probably by the way of proper integration in Plasma) by the KDE team would be preferable.
I have posted some thoughts on this at https://github.com/AppImage/appimaged/issues/30.
Please, let's not forget about the update/auto-update of appimages! That's a very important point too!!!