This is mainly a story how people who are stuck in limbo after a close person's death (a brother, a friend) find closure so they can finally move on.
(Through the power of Love!)

... and I think this is why some might find that the romance part doesn't get enough screen time. This has been a point of contention in other recent (BL) productions too, that as soon as another story line gets more screen time, the romance part has to be cut a bit, which upsets some people.

If seen from this angle, writing choices make a lot of sense -- because grief needs time, grief is remembering the past, and letting it go. Trying new things can help, as can reliving the old things.
Neil needs someone to push him out of his fugue -- which Sea finally does. And only now that he is able to finally face the loss of his brother, his friend Reese, who until now had dedicated his life to help Neil, can also finally find his own new goal in life.

So, with these thoughts in mind, these are the things I loved:
* The time that was dedicated for flashbacks, and the way we got to see them bit by bit, to understand why the loss of Matt hit all of them so hard,
* the ugly crying -- crying is not cute, and if you really cry, then you don't care what you look like, you don't care about the snot and the mucus, you are just crying,
* the talks between Reese and Neil, which were so important for both, and obviously did not happen before,
* the way they found closure -- and that the writer chose to not go the route I expected in the beginning. This is obviosly onbly the start of a new part in the characters' lives.

Other aspects I liked:
* no romance arc between A-Liang and Ting Fei,
* the choice to show Sea's and Neil's first time as sensual rather than sexy,
* the way they chose to bridge the language barrier -- whenever Orca talks to anyone but Reese (as long as he doesn't want to rile someone up), they all talk in English. Heavily accented English, with grammar mistakes -- just as you would expect from people who speak English as a second language. For Reese and Orca, on the other hand, the writer makes it very clear that they both have been learning the other's language in secret -- they just choose not to speak it as long as they are at odds with each other.
* Actors were great -- I liked how Reese's actor gave it his all during the crying scenes, and I could watch Neil's eyes forever.

One story arc that got lost a bit for me, was Sea's story -- mainly how his feelings evolved from adoring his idol to loving Neil as an equal. I don't even think it would have taken much, just a small gesture or look here and there. It's already there, just not clearly told.
(I also wish they'd given him a different hair style, at least for the concerts. Especially during the last concert, his hair and his make-up made him look even younger than usual.)

I'm not too impressed with how the makers chose and used the background music. I'm not talking about the songs the characters sing, those are all right, if not my kind of music. I do think though that in a drama with music as a main theme, there should have been more focus on the effects background music can have. In several scenes, I found it distracting (silence is also very powerful! And it could have been used to its adavantage!) and overall, it was mostly bland.

All in all, it's a solid production, with a well-rounded cast and no glaring mistakes. "Finding closure through the power of Love" is a well-used trope and it's not badly implemented here at all.
Worth a watch.