Here's what I feel about Legends' 4th Anniversary so far.

Negative:

First of all this is the only Anniversary that feels super dry than the past ones. They only released two Sparkings in this 1st part which is a first were players expected 3 to 5 units like, the 3rd Anniversary (which is the best one so far IMO.

The Raid Medals drop is so ridiculous when it comes to the Raid and COOP and the developers really want to make players grind in COOP just for those medals, but without such new featured uunits it is quite difficult still they, released three free units it does the job on taking down the COOP Boss but it is still impossible to grind because of players disbanding because of not having the new featured units. The Medal drops will be based at how many stars you have on the new units and its guaranteed drop which is kinda greedy and stupid man.

Even the new mode where Jiren is the Main Boss is just a complete waste of time and nonsense. The developers needs to focus on its players and their suggestions to make the game more enjoyable because that's what games must provide to individuals the enjoyment but, forcing you to play such missions and modes in order to grind for something valuable and useful for improving your units and other is not fun at all to be honest. Even, the New Vegeta is MID or not that good at all even though I have him at 7 Stars just for COOP but, ain't doing that much too.

PVP is also broken as usual. The Zenkai for VB literally is able to 1 Hit K.O. MUI with his Blue Card which is also insane but, the developers know what they're doing.

Positive:

The devs really gave a lot of gifts and free 400 tickets to Summon and gather and improving a lot of units and also giving a lot of Free Chrono Crystals but, the sad part is you need to grind for medals ain order to completely obtain all the free CCs including in the Hoi Poi.

Ultra Instinct Goku has given such HYPE to all fans who loved MUI and the developers did justice to the unit to its animations, abilities, cover changes and its Auto Win in Dokabaki the only thing I find annoying is his Legendary Finish animation as it takes too long to finish, literally making PVP players disband quickly without hesitation.

There is still part 2 of course. I think the main reason that the 1st part is dry because they're going for the new movie and its units from Gohan to Piccolo as they have already started campaigns for the movie and also giving free CCs out of it.

They're giving out free 4 Legends Limited Guaranteed tickets which is good for new players and for long time players to also star up their LL units

The Anniversary story is interesting bringing UI Goku, Jiren, Vegeta with Broly and Gogeta.

The new free Units (Gokú, Krillin and Tie) are good units like, no joke they're good to use even for PVP. I mostly like the Tien and Goku.