A few places for clarification:
1- is there a way to also use Label in WikiLinks in addition to doc-name? e.g. as sorting category
2- is there a way to lock certain document on top of the group/folder? i.e. this “article links” document
3- when the WikiLinks is generated, perhaps better to disappear the square brackets
4- input of Chinese is not supported well during WikiLinks input [[, have to copy/paste item link manually
Only groups can be kept on top (see Preferences > General) but you could also use unsorted sorting (see View > Sort).
I wonder whether WikiLinks are actually the best option in this case or whether cross-links (see Insert Link To submenu of contextual menus or Edit > Copy Item Link or Edit > Insert Link To…) are a better alternative. Cross-links don’t require enclosing square brackets and still work after renaming the target document.
In the meanwhile, WikiLinks seems like a good potential when drafting document to interlink database items, auto-generated links feels better and faster during input.