See tony, I'm amazed you even thought to compare "your lower level Juno" vs ignited one because there's nothing to compare in terms of WB effectiveness. They were literally the same. It's quite a shock coming from such an "established" player.216 Bosses defeated (your thoughts in comments :P) 29
One booster slot is reserved for the boss of previous ragna. I'm assuming Heph rerun doesn't count so Caduceus will be one of the boosters for the next ragna burst. New (counter) units become boost as well. We're expecting dark Eve and she'll likely be another booster.
In short, things can and will change to an extent.
As for the whole burst mode itself, it's a high investment affair (time and/or money). You shouldn't worry about it, just do what you can.
When the new units are released in the Korean server, they normally never have the spa skins animated. Animation is made weeks/months after the initial release (or never, just look at Thisbe).
You don't notice this because we're so behind the KR server. You did notice this time because Nicole/Pepita/Grilla (you forgot her) were the new units released simultaneously for all servers.
One tiny thing you're forgetting about collabs is that they cost money. You also want collabs with popular gachas or franchises that normally make a lot more money than dc (as you also said I guess).
Let's assume some of the companies would agree to it (which is also a stretch), the more popular the franchise is, the more it would cost to collab. Shifup's been developing two games (Eve and Nikke) and still trying to keep DC alive. I imagine they don't have that much extra money to throw away so let's just be realistic and forget about expensive collabs.
You haven't acknowledged the change of daily card rates at all (e.g. purple card has only 5% chance for the 5* unit compared to 10% before). Outlined here:
So better increase the issues number to three.
Yep I have posted: nickname, my account ID, a team (all they said was any team) per the requirements in bold. My comment wasn't approved. A lot of folks did the same and they got it approved.
On the TapTap board of course. Makes no sense.
I didn't get any of the promised rewards.
That's simply not the case. It's just not working. There was no "Welcome new childs" screen at the beginning of this Narrative either. After today's mini-update, there's still nothing and there should be at least notification about the new 4 unit banner (Ymir, Neptune, Pomona, Euros).
Please forward this to the devs so they can either fix it or turn the feature off if it can't be maintained anymore, thank you.
There are two active Destiny Child discords: Global and International. They're filled with useful guides, people willing to answer your questions as soon as possible and much more. Also the event guides you see here or on reddit are originally posted in these discords.
Let me stress that main community info source isn't moot or reddit, it's the discords.