Nylon braiding won't keep the hose from collapsing as it's just as soft as the tubing.
The only thing it's good for is to keep the tubing from blowing out from pressure. And don't think for a second your pump is capable of enough pressure to blow out even regular tubing. Your radiator is going to blow apart before your tubing does.
If you are genuinely concerned about the suction side flattening out, look for wire reinforced suction tubing.
Linky
But on the other hand, if your tubing *is* flattening out, you seriously need to rethink your loop because you have some major restriction somewhere. And your pump is probably cavitating like a mad man.