Having purchased Dronelink on whim, it didn't take me long to realize that while Litchi fulfills all my auto-flight requirements to a tee, and is above all, intuitive to master, Dronelink is ponderous, didactic, extremely difficult to navigate, and overly complicated, for what it does.
There is way too much obscure and esoteric terminology introduced with Dronelink. From the vaguely medical-sounding "repositories" to the cryptic "components" to those annoying and utterly baffling menus teeming with options I'd never use, Dronelink's maze-like user interface brought to mind a notice pasted to the door of an old college professor: "If you can't dazzle them with brilliance, baffle them with bullchit". I gave up searching for a means to set waypoint altitudes in Dronelink, after an exasperating hour-long search through multiple menus and pages crammed with ambiguous verbiage.
I finally decided that there was no waypoint mission programming capability attainable with Dronelink that cannot be achieved with less effort, and in far less time, using Litchi. As a hobbyist drone flier, I want to create flight plans that show the altitude and camera orientation at each waypoint on the map screen, without any meandering searches for those very basic flight parameters. The final nail in the coffin for Dronelink, as far as I am concerned, is that there is currently NO offline access to flight plans, which is a major deal-breaker for me.
Having purchased Dronelink, I will leave it on my system until it is ready for prime-time, while relying exclusively on Litchi for all my waypoint drone mission requirements, as I have done over 1,200 cumulative autonomous miles flown with my Phantom3S.