The cannnon is certainly important for consistent storytelling.
It's really not, the new series can ignore or actively contradict the established canon and still be consistent in itself and that's the only consistency that matters.
Trying not to contradict TNG for example is nothing but fanwankery, that series will be 30 years old next year, it really shouldn't matter anymore. Let's say they have a great story for the new series and suddenly someone remembers "That contradicts a fact established by TNG in 1990!", should they change their script? Of course not.
Could t me in as one that thinks we can stick to cannnon without it being continuity porn. I guess for me staying with cannnon is not the same as referencing it. It's possible to write a Trek show that maintains cannnnnon yet has very few references to it.
Even if they do that, fans will still complain which is another problem of a bloated canon, fans really have a hard tome to differentiate between actual canon and the canon that only exists in their head!
Look at Enterprise's portrayal of the vulcans early in its run for example, nothing they did contradicted anything, many people still complained that they somehow got vulcans "wrong" although the only thing the writers contradicted was the assumption that all vulcans acted like Spock.
Even Jolene Blalock fell into the canon trap, she was supposed to eat in a scene with her hands and pointed out that vulcans don't touch their food with their hands and ate a breadstick (iirc) with a fork and a knife instead. Her intentions were good but it was ridiculous, just because the fact "Vulcans don't touch their food with their hands while eating" was established at some point that doesn't make it true for all vulcans ever.
How many rules (formal and informal) exist on earth that many people simply don't care about? It's almost as if a society consists of individuals with their own values and ideas.
A huge canon is problematic because it can stop you from telling the story you want to tell and if it doesn't you'll still have fans breathing down your neck. Canon creates problems but adds nothing of value to a new show, it only matters to longtime fans who spend way too much time thinking about details and minor bits of information.
What I really want to say is:
Screw canon, get rid of it and reboot the shit out of Star Trek and nothing half assed like JJ Trek.
And that doesn't mean they shouldn't respect what came before but that's still possible with a reboot, unlike what some fans seem to think respecting Star Trek does not mean bending over backwards to not contradict stuff.
The new series should be Star Trek in spirit not in every detail that was aber said about everything.