Hi toppleover ( and some others also) it looks like you are using a rope with an outer sheathing and inner core as opposed to the single woven line like they use for depower line and often use in rope sliders. I had originally started using this type of sheathed rope and found that it has a lot more friction than the single woven dyneema line. I also had the outer sheathing break a couple times unexpectedly and quite quickly into its use. The inner core holds all the strength so when it broke it wasnt a problem.
I consulted with my local yachting store (Yacht grot in fremantle awesome place for bar mod type stuff) and they pointed me in the direction of the dyneema line which I have found to last a lot longer and be smoother sliding.
I used to have a ss ring on the line and hook into that but for the last 8-10 months I have been hooking the CL straight to the line. I have not had any significant wear on the CL (using a niash one which is quite thick and robust) and the rope is wearing at a normal rate. I also tied an extra bit of rope to my ride engine spreader bar, the rope is looser than the main one so that it will wear less.
I modified my 2015 naish bar by making a very short CL by hacking up the original CL and using a 120mm Dyneema Link (bought from yacht grot) I also took off the stopper block on the depower line which limits the bar throw. This has brought the bar in closer and given me extended throw. I have had this setup for a couple months and I am really liking it. I have had it out in a variety of conditions and have never needed to use the trim yet. I would consider a no trim bar for my next bar modifications.
This is my bar with the stopper block I took off, the dyneema link and an original naish chicken loop

this is a closeup of the CL

This is the Dyneema link I used, I was really stoked when i stumbled on this item as I had been dawdling about learning to splice and stitch my own one. They are very useful little bar mod items, I also included a pic of the part number in case anyone out there wants to order them online. I think mine cost $10 I got it at Yacht Grot fremantle they are a goldmine of nick nacks and have all the different thickness of dyneema line they were also really helpful when I ran my little projects by them.
This bar mod was super easy to do, only tools needed were a knife and needle nose pliers. It could work on quite a few other brands bars aswell.
I really feel like I dont need the trim with this type of setup, I would take a below the bar swivel over having trim as it seems none of the major brands make a compact QR with below the bar swivel and trim cleat. The airush brain QR is very compact with below the bar swivel. I have been eyeing off an airush bar to modify, I would just do a super short CL with no trim and keep it clean and tangle free above the bar