I still own the game, and think about running it again, from time to time. Having lived in Ireland for three years (2005-2008), I would especially be interested in running The Shattered Isle, as it pits Hibernian rebels against the oppressive forces of the malevolent Granbretan Empire (of course, there's more to it than that!). It would be fun to draw on my real life knowledge of the isle (and photographs) to run such a fantasy campaign.
As for Moorcock's character 'Hawkmoon,' I find him to be rather shallow and uninteresting. Instead, I much prefer Corum. Indeed, I find the Corum tales to be superior to those featuring either Elric or Hawkmoon (especially compelling, in my judgement, is the way in which Moorcock draws on Celtic mythology in the second Corum trilogy). Nonetheless, the 'Tragic Millennium' is a great setting: it is familiar yet exotic, and provides ample opportunity for adventure. Moreover, unlike the 'Young Kingdoms,' the players can adventure in the world of Hawkmoon without the knowledge that the whole place is going to be destroyed in a few years hanging over them! Indeed, this difference was the main reason why I picked up Hawkmoon instead of Stormbringer 22 years ago.