With a heavy heart - it's back to Gnome
So, for the first time, while using Cosmic on my laptop, I decided to fire up a Citrix Workspace session to get some real work done. With the Cosmic DE, the resolution of the session was off. All appeared very tiny, and sadly, I am unable to make adjustments to the remote session's display settings.
I switched to Gnome and the remote session has perfect resolution.
With Cosmic and Gnome being so close in usability for me, the one that delivers when I need to get some work done on it will win as my default. I'll keep COSMIC installed and have a look now and again.
I don't know what is the cause for the Citrix Workspace remote session resolution not adjusting to match my desktop. I've tried everything but think it's just Cosmic since I try nothing on Gnome. It simply works.
So it would seem that for straightforward activity in Cosmic, it's working great, but I know that running a Citrix Workspace remote desktop session is on the fringe.