I have just downloaded GeckoLinux and burnt it to a live USB stick for trying. I've tried the Cinnamon version.
I was wondering what advantages you've found with the Cinnamon version of GeckoLinux - compared with Linux Mint? The reason I'm asking is that Cinnamon (as well as its core apps) are developed in-house by the Mint team, so I guess it would very much be part of their "ecosystem"?
I noticed that GeckoLinux uses the Calamares installer rather than YAST. The Calamares installer has always been very good, but not sure why they would want to feature this when it could be managed by YAST?
I love checking out the "live" versions of up-and-coming distros to see what is going on in the Linux world, but as my "daily driver", I always revert to using versions of the major distros - eg. Ubuntu, Fedora and (now) OpenSuse. I think the reason for this is that I feel more reassured by the fact they are owned and/or affiliated with large corporations (eg. Canonical, RedHat, SuSE) which means you are going to get the stability and polish of a professional grade product, a wider choice of software and the confidence that your system will continue to be supported for a long time. Sadly there have been a lot of very promising community-run distros which simply have not had the resources or contributors to keep them going.