If the issue is that there is a potential for a fire in the engine compartment that will melt the plastic bowl, or maybe something will fly off the engine hit the plastic and break it and release fuel, or it just starts leaking, is great enough that it warrants the re-location of the filter, than what about the fuel lines themselves, they might catch fire and burn through, or just start leaking...better move those as well. I see a lot of these setups with catch bowls under, that might make sense, but moving it seems a bit overkill to me.
Want a metal bowl and don't like the inconvenience of not seeing what's inside, than put a pep-cock on the bottom of it and give it a drain every so often and see what comes out.
