Originally Posted by Drip

Still varies a lot by girl and depends on what you look at. Several 5/4 event girls with leveled equipment already outperform 1/1 Rainbow Girls who have access to only 1 piece of that same equipment. There's a good reason why I didn't replace Belladonna with Swimsuit Epidendrum untill I had 3 jewelry slots unlocked on Epidendrum. I had a similar thing when I wanted to replace Mirabilis with Apricot.
Then there's Southern Cross, who has a passive that is for now only also available on Gentian. There is simply no Rainbow alternative for her Activation Rate debuff yet.

I could by now replace Hypericum with a Rainbow girl, but then I'd miss out on her comedy value, so that's not going to happen either, meaning, releasing blooms for event girls is very much warranted, to allow players to keep viably using their favourite girls, rather than min/maxing.

I do agree with your post. Zandel also forgot to calculate on some of our counter event girls. Having 4 defense equipment will equate to a lot of damage dealt compared to attack squads and defense squads. Which Counter squads have the best of both worlds along with the fact equipment has an higher noticeable impact on them compared to the rest. Mountain Lily who's a perma event FKG will also get the counter passive once she gets her bloom.

There's also the part where fremium players won't have access to rainbow dress blooms since those are usually at the Daily Deal or Step Up Gacha. Fremiums have to rely on getting dupe rainbows at premium gacha which will take a while. While event girls will have access to all of their equipment slots with just a bit of farming. Let's not forget smr's post on how equipment also has an bigger impact on Bloomed FKGs with more unlocked equipment slots.