I think it would be really overcooked if canned. At least for me. The blanch and freeze method leaves at least little crunch! Drying it would be very handy!
The only canned broccoli I was happy with (I TRY canning just about everything at least once..and since I LOVE broccoli and have had some great luck with it some years in my garden) was pickled broccoli..like in mixed pickled veggies. I usually do some celery, carrots, broccoli, bell pepper and cauliflower in mine but you can add any veggies and use a brine you would use for dill pickles..yummy and more crisp and not as strong and mushy as it is if you just can it regular. Have fun!!!