Yup, the ideal solution. So long as you make them from a quality metal, they never wear out. The only downside is that they'd probably add width to an already wide lump, plus there's no natural take-off to drive the PAS, aircon and alternator..... unless you want to drive some or all off a chain, as bikes do, but that creates a whole load of new packaging issues.
Silly idea to design a transverse inline 5, but it's a wonderful lump and I'm glad someone in Fiat was mad enough to do it.