I've enjoyed a good many of Philippa Gregory's novels, and consider that she writes well; but have started to eschew her in recent years. She seems to produce exclusively nowadays, an endless torrent of novels about British royal women from a fairly limited period. I would seem to have a more restricted appetite for queens, than many have -- I've just got sick of 'em.
She just seems to mechanistically go on and on, milking this seemingly unceasing cash-cow. I find myself wanting to shout, "For pity's sake, Philippa, make a change ! Write about something totally else, even if you make a hash of it ! How about medieval Russia, with Kievan Rus' and the Mongol threat; or the Incas; or China or Japan, very long ago -- anything, so long as it's different..."