Fear not, I might tinker more.
My copies of the audio version of the Pirate Loop have arrived and I'm delighted with it. There's a review of it by Richard McGinlay on Sci-fi-online, and I agree with him that the pirate-space badgers and Mrs Wingsworth are "brilliantly conveyed by reader Freema Agyeman".
McGinlay also says that the audio book is aimed at younger readers. The same assertion is made by Joe Ford in his review of the paper version, in what's generally a favourable review.
"I do get the strange impression that Simon Guerrier (a dead cert for quality after all the grand work he has done with the Bernice series over at Big Finish) wishes he could make this darker and more horrific, but he does a good job of that even with the playful atmosphere he has to maintain so as not to upset the kids too much."Um, I really didn't wish anything of the sort. The idea was to do something very different from my last one, something gleeful and not bleak. If anything, my bosses had to stop me getting too silly... Yes, there were originally even more stupid jokes and references.