Absolutely agree that Creature is worth a look even for anyone who thinks ballet isn't for them. For anyone on the fence, there's a trailer as well as extended clips online for Giselle, which should give an idea of what to expect
As well as choreographer Khan and the ENB, I'm pretty sure Creature has the same key team (designer, composer & dramaturge) as Giselle, so presumably the feel will be similar. My only slight worry is that my expectations are sky high.
More broadly, the upcoming season at Sadlers Wells looks really exciting. Full of interesting sounding stuff from Tanztheater Wuppertal, Birmingham Royal Ballet, another performance of Pina Bausch's Rite of Spring, and new pieces from Michael Keegan-Dolan and the lady who did the wonderful Rain to Steve Reich's Pulse.
However, the thing I'm most excited for, even above Creature, is Crystal Pite & Jonathon Young's new piece Revisor . I didn't see their previous piece Betroffenheit until it was online, and really regret not going to see it. Dark, moody, at times emotional & nightmarish and at other times viscerally exhilarating, it reminded me a lot of David Lynch.