No one has because it’s not worth it (since the cells are the right choice for the pack, as I stated in my conclusion)
But if you have a dead pack, then swapping the cells is a very economical solution and is totally feasible from what I’ve seen, albeit I bit of work desoldering the cell tabs from the PCB.
If you are not experienced with battery making, I highly recommend shipping the pack to a battery builder so he work with it.
@BenjaminF @Skyart @A13XR3 come very recommended and I can personally vouch for their passion and dedication to battery building, but there are also other as you can see here