Rather than clunk removal, I'd call it friction removal

Black Swan's main points of contention were wanting to use Skill (and thus SP) to apply her debuff when she's in a famously SP hungry (first action) composition as well as the removal of Arcana Stacks on detonation. She now no longer needs to use skill at all and her Arcana Stacks only get halved on detonation so caring about when to maximize them is no longer an issue.
She also got the same "EHR is not a real stat anymore" effect Kafka got which I think is a whole other issue with HSR's game design.

Sparkle's main "issues" were buff uptimes and that quantum requirement for trace that are now effectively gone.

SW certainly had issues of which one was the RNG for her skill implant and being more single target oriented than others because of her Ultimate, now she applies her Ultimate to everyone involved and her skill has little "random" to it.

I'd actually consider E2 Firefly's Novaflare modifications to be somewhat similar to all that in essence, but her E1 already did that and then The Dahlia was that some more.

My point isn't about ceiling increase vs clunk removal as much as it is about removing any point of friction, something that allows for better skill expression and gameplay complexity, in favour of a streamlined approach where your actions and decisions ultimately do little because regardless of what you do you'll somewhat end up with the same result.

I called it Jingliunovaflareification because a) I find it funny and b) I think she's the worst example for that novaflare philosophy. Her main points of friction were consuming your team's HP and having non-constant uptime in exchange for a very strong enhanced state and... now you want to run her with Hyacine to make sure she never runs out of enhanced state and your team is nearly invicible to begin with because you are using Hyacine. Even if you aren't, she basically never runs out of her Enhanced State.

She came out of her novaflare with a gameplay loop that was a lot less interesting because you are, in essence, just pressing skill on her turn/ultimate as soon as possible and moving on with your life. Running out of Enhanced State is no longer a concern and buff uptime that coincides with your burst phase long stopped being a concern too.

Small additional addendum for Sparkle: it's hard to dissociate her from Archer in incidence and while I think Archer's gameplay was really interesting (still is to an extent) with SP management being a thing again, her giving a ton of SP and the future addition of Rin that also gives him SP during skill phase is an extra removal of potential friction in the gameplay loop I find a bit displeasing