There's multiple arcs in this, so I'm going to review them separately:
High Republic Adventures Vol 2 : Mission to Bilbousa (#6-7)
Story: 8/10
Important: 6/10
Reason: This was my favorite comic book story in the series to this point, my only real complaint with it being how short it was, but only because I'd have liked to stay with these characters longer, not because it felt rushed. For the first time in an Older book, I felt like the main character had some real depth and intrigue to them, and the story itself was compelling, with fun twists and actual tension. Like HRC vol 2, it also has some pretty significant story impact, though not nearly on that level. It's a surprising choice to have so much important story information in the comics, let alone located in vol 2 of said comics, but as some one reading them, I appreciate that the comics aren't throw away filler stories but have real significance.
The Galactic Bake-Off Spectacular! (included in HRA the complete phase 1)
Story:4/10
Importance: 1/10
Reason: The story's not actually as cringey as the name would suggest, but the framing narrative is, and the story itself is just very okay. Can't think of any story relevance. Feel free to skip if you want.
The High Republic Adventures #11
Story: 5/10
Importance: 3/10
Reason: Like the bake off's framing narrative, half of this story is very light hearted and cringey, but it sets up some important events among the villians, and gives a little, much appreciated, insight into the mental state of one of the main characters we've been following. Nothing to write home bout, but probably worth reading.
High Republic Adventures Annual 2021 (stories available in The Monster of Temple Peak collection or HRA vol 2)
Story: 6/10
Importance: 3/10
Reason: Its a collection of short stories, some I really enjoyed, others I was more meh on, but as a whole it was an enjoyable read. Surprisingly we get a lot of meaningful character back stories. Like the Starlight short stories, you don't NEED this info, but it does provide some meaningful context. As an aside, the reddit reading order wiki places these stories mid way through wave 3, however, because they were at the back of TMoTP, I read them right after I read that. Nothing struck me as a spoiler, and given HRA vol 2 also finishes right after TMoTP, I question why the wiki has it so much later. Best I can guess is one or more of the short stories is canonically around this moment in the story?
The High Republic Adventures #12-13
Story: 5/10
Importance: 5/10
Reason: The conclusion of phase 1 HRA felt very aggressively okay. Some of the art/panels during the lone action sequence were hard to follow, which didn't help, but despite a potentially interesting set up, the final action sequence pay off was rather disappointing. There were a few interesting nuggets that keep me from going lower then a 5, and the events had some greater story impact, so reading it wasn't with out value, but its sad to me that I can honestly say you COULD skip the finale of this series and it wouldn't be that big of deal.