I just would like to see and read the " blue " threads .

News threads do get separated from others into a specific group, as you don't have to skim through everything for that.
Just be aware that only these are visible as on same page, so you still have to change pages for older ones.

Thank you, much appreciated.

Thanks for the fork, the grouping of news posts is a great idea!

Would it be possible to add another option to the various groupings that places them above the favourited threads?

Another idea that may be popular: Grouping delisting threads together. I think GOG's own topics tend to use the word delisting, but probably best to include the words delist, removal and remove just in case.
That together with an option to place the group above favourited topics should ensure they're fairly impossible to miss whether GOG stickies them or not (which is a polarising issue).