Totally agree with this right here. It’s a drawback of any PCB based design, but often times we have packs being built without any frame with P-groups being held together with nickel, tape, & hope.
I’ve been using a combination of liberal silicone for dampening/adhesion of cells to the PCB (insulating the positive copper pours that run under cells) + strapping with kapton + heatshrink. So far so good, and this is similar to how Ernesto is building his production batteries in the Kaly 2,0 as well.