I asked Cabrinha about upgrading to the modular system. They said the swivel attachment in same from 2017 onwards and it is easy to fit.
I use a trimlite 54cm bar with all my smaller kites. I do nothing but foiling in all conditions. It works fine.
I have a secret weapon for big kites. I made up a 60cm bar using Cabrinha spare parts. I replaced the trim adjusting bungy line with a very long length on dyneema. It gives me 50cm of trimmer travel. That is easy to do. Alternatively you can just make longer pigtails.
The end result is a combined bar throw and trimmer travel of about 90cm. I often go out on my 12m, rigged for minimum power, then just pull in more and more trimmer. It's doable up to about 25knots. Tacks are stupid easy with that much power.
My current experiment is to make a long travel trimless bar. I have a Recoil mainline and that gives 70cm of bar throw without all the springs and stuff. I have used a 70cm throw bar with rear line trim adjusters. It's not too bad with a smaller kite and/or short lines just using the bar throw. I quite like the clean look of the centre lines with no trimmer.