sorry, i cant stand guy martin, just something about his personality and appearance(mutton chops!! feck off) just feels off to me.
that said, ive no idea who id like to see on the show, every name I've seen suggested looks crud, they need to find at least one well spoken intellectual type, one of the reasons clarkson, hamond and may all did well is because they're all very intelligent well spoken blokes when they needed to be(not sure about hammond, but he made up for it with his enthusiasm)
i think they need to really revamp the studio of the show though not just the presenters, maybe get back to basics and start doing more with vehicles that the everyman could own.