[verizon]

on a practical level I suspect that many people would write them less as a result of not abbreviating them and thus make the intention of them less too, which would be a sad thing.

for me those abbreviations are well known between Muslims, so everyone knows what they mean, letters are just symbols for spoken words, if you carried this to its conclusion you would not only forbid these abbreviations, but also forbid to write transliterations in the roman alphabet as it is not a proper set of symbols to convey the Arabic unless it is written in real phonetics and few could understand that if it was.