All these things are present as templates in this section...check the rules, info and template suggestion threads here in the proofing area or the main manga review section....threads are stuck so they should be visible enough...
The mentioned ideas so far + more
- Art review
- Individual character review
- Team/Group/Oranization review from the story
- Plot review
- Arc review
- Mangaka interpretation (Learn more about the person behind the manga) {Not a Review, but interesting no less}
- Arc theme, symbolism, names & art review (Bleach for example, has a big theme in each arc, current old Germany).
Just brainstormin here.. anyone has more ideas for more potential ideas?
Also should we expand further than reviews? For example, once in a while talk about the mangaka? I'm sure many people could be interested in that, I would :3
Talk about the mangaka can be done as well...I suggest this section: http://mangahelpers.com/forum/forumdisplay.php/917-Authors-Artists