In additiona to what you mention, submitting scans for packaging, sell sheets, publications, etc. are all 1 point each.
Submitting a checklist is worth 5 points.
Making edits in the database is worth ?? points - this is awarded monthly, by Admin, based on the number of edits you made in the database. They are hopefully reviewed to see if they are useful edits. I don't know the formula, but it may be something like 30 edits = 1 point.
-- Dan --
Note: Please see my profile for more info regarding trading (section updated 3/4/2024). I have added a large portion of my inventory to the site, and currently have trading turned on (details are in my profile).