Of course he was a tyrant about his vision and what he thought was needed to make Gucci ultimately his Gucci. And yes; 70s were ever present. But he never did the paint by the numbers direct inspiration/costume history/runway transition - so literal, so cloying, so dense that it became dubious or senseless at the end. At the time, many designers were doing exactly that. And that was -and always is- simply sad for any designer. Tom never lost his relevance and distinction among his peers.
You saw the Obi belt in 2002, the cherry blossoms, the rockstar cuts, the Grecian draping, the Bladerunner jackets... but never something soo deep and dense that it suffocated the modernity he presented. Was he 'of his time' all the time? Maybe not, but he was the person who approved or denied the Milanese silhouette at the time. Look at what Giannini is doing now: take one thread of inspiration and smear it all over the clothes like there is no intellectuality or creativity left in fashion. Yet, some people close to Gucci circles call her attitude 'modern' since everyone wears the H&M or Zara fashions now, even the rich. And that's what her clothes look like. They call them 'young'. Is that any better than sticking with what you are sure to be applicable -and I daresay- beautiful every season as Tom always could accomplish? No. I don't think it is.
I am also happy he is doing new things, but in terms of being self-referential: I don't want to sound too pessimistic, but who isn't self-referential really? Marc is still the same Marc, Galliano is still the same Galliano. When they attempt to do something different, people hate their collections with such passion, I fear for the security of their lives. Same is true with Miuccia, Karl, D&G, or even Alber Elbaz and Ricardo Tisci. Their best collections are always the ones they steal from themselves.
I disagree with you on this point: it is a terrible mistake to be overly and overtly repetitive, but at the end of the day, people go to Armani for one type of look, Versace for another, Chanel for something else, and Prada for something different. But what sells and becomes distinctive about these brands, hence designers, are their classic looks and route in fashion.
I am sure Tom would follow today's trends if he stayed at the helm of Gucci.
He would create the 'it' bag during the 2005-06 seasons, the 'sensual' ethereal gowns later, the frigid black numbers last year, and the recession chic this season... but in his own way. Plus, even though he says what he does today is very different than his Gucci days, most of his clothes do carry his signature edge in menswear - that he crafted during his stay at Gucci and YSL. Some of his looks are exactly the same with better detailing and maybe more expensive materials. He is not doing anything that different today, plus, it was him who elevated the 'tailor-made' menswear over at Gucci and YSL what they are today. He was always after the exclusive, as he should have been. And frankly, the tailor-made segment of Gucci's menswear is their only saving grace nowadays, because they can still cut a mean suit. Hopefully, that will be one part Giannini will not attempt to touch.