Gotta say, I just changed my vote to a "no" here after originally voting yes.
Would I be happy to swap out a few spell fragments for something different? Sure, but I'm afraid anything Inno does will be an overcorrection. A proposal to "greatly reduce" or "somewhat reduce" them isn't specific enough for me, especially without a proposal for what will replace them.
I complete the spire weekly. I have over 300k spell fragments, though I craft something on nearly every cycle and often use timeboosters to get more than one in a cycle. But really, it's nice to have that freedom. I have so many spell fragments, I don't need to think about acquiring them now. It's one resource I no longer have to balance. Just like enchantments, most relics, coin instants, etc. That's not due to a faulty system so much as I'm a very active player who's gotten good at gathering available resources.
I don't necessarily disagree with the spirit of the proposal, but I think it's better left alone. The spire is already quite valuable as it is - whether or not an individual player wants every prize offered - and I'd hate to see it worse after some sort of "rebalancing."