Quick update on this. I have been really enjoying this frame through the fall and early winter. Currently considering 2 changes.
First - a longer dropper. The 100mm Giant Contact I currently have just doesn't go low enough and I have room in the frame to go to 150 or even 170mm.
Secondly, I am going to try a better and longer fork. The 2018 RockShox Sid RL (100mm travel, 51mm offset, Solo Air, spring Charger 2 damper) is way out of its depth on a lot of trails. I made the change from a similar fork to a 120mm 44mm offset Fox 34 on my last XC bike and it transformed it. Interested to hear if anyone is running a 120mm fork on their YFM026. I can borrow a fork from a friend to try it out, so will report back here.