> > > > > How many proteins are made per transcript before degradation is also liable to be very different for reasons like, for example, codon usage (rarer codons tend to have smaller tRNA pools) so it will take longer to translate and thus there will be fewer proteins, and any number of other things.

On that note, codon optimality also influences the half-life of mRNAs.

https://doi.org/10.1016/j.cell.2015.02.029