It was business as usual in the British dance world in 2015. Looking back over the year, theartsdesk's dance critics see the industry's many talented, capable people continuing to do their jobs well, but we don't recall being shaken, stirred or surprised as often as in other years, or at least not by new works: our top moments of the year are concentrated in the farewells of great dancers Sylvie Guillem and Carlos Acosta, and in classic productions of classic ballets.

Any partnership that lasts for 20 years deserves a party, and last night at Sadler's was a celebration of the wonderfully fruitful working relationship between choreographer Russell Maliphant and lighting designer Michael Hulls.

With real live birds fluttering across the stage, and a sweetly happy ending – hurrah for young love! – Frederick Ashton's 1961 The Two Pigeons can look like mere frothy fantasy, precisely the kind of trivial, uncomplicated ballet plot that the young Kenneth MacMillan was reacting against in his own work in the early 60s. Is its return to the repertoire after an absence of 30 years just the Royal Ballet pandering to the escapist fantasies of its audiences – who, director Kevin O'Hare reveals, have been clamouring for this revival?

What dancemaker wouldn't want to tackle Le Sacre du Printemps (The Rite of Spring) at some point? Just as the Stravinsky score changed music, the original Ballets Russes production changed dance - and was then, conveniently, so completely forgotten that no master-text exists. Everyone is free to take the Stravinsky and run. Or rather, dance: as Michael Clark has observed, one of Sacre's gifts to a choreographer is the in-built necessity of dance to the scenario, in which a victim is chosen by a crowd and forced to dance to his or her death.

What I want to know is: has there been a major upsurge in boys taking contemporary dance classes this year? And if not, why not? With the amount of male dancing in the media these days, the excuse that boys lack dancing role models just won't wash any more.

For an art form with a marked penchant for looking over its shoulder, it’s surprising how rarely ballet has exploited its own origins story – not least given the fabled opulence and style of its leading character. The Sleeping Beauty makes a nod to Louis XIV and the court of Versailles in its final moments, but in most ballet goers’ mental archive that’s just about it.

Wayne McGregor wasn't anyone's idea of a ballet man when he was appointed choreographer in residence at the Royal Ballet in 2007. Before then, and since, his work has been abstract, spiky, verging on dysmorphic. His interest lay not in human stories but in the snap of synapses and the speed with which the brain can relay messages to a hyper-flexible body.

Parties in someone's back garden are often more fun than those in big fancy venues. Richard Alston Dance Company celebrated its 20th birthday with a big soirée at Sadler's Wells in January, but last night was their cheerful family gathering, held in their home theatre The Place, and offering a hearty buffet of short pieces rather than an elaborate three-course meal.

Last night at the Royal Ballet was, emphatically, laser-free. The combination of Afternoon of a Faun (1953) and In the Night (1970) by the great American choreographer Jerome Robbins, with a repeat of Kenneth MacMillan's 1965 Song of the Earth, performed earlier this season in a different triple bill, is your archetypical safe bet, presumably calculated to soothe any ruffles that might have been caused by Wayne McGregor's ambitious Virginia Woolf opus. The Royal Ballet ought to have been able to do these mid-century classics standing on its collective head.

Sylvie Guillem is retiring in exactly the same way as she does everything: in her own time and on her own terms. She turns 50 this year, but it’s not that age is finally catching up with her – at least, not in her body, which she acknowledges has potentially many more years of dancing in it.