I don't think this is possible, but it would be nice to be able to merge similar ideas, to keep the list of idea's tidy,
Or adding the possibility to link similar ideas.
"soort on most voted" "soort on most viewed"
When you type a title in some other forums, it gets the keywords and finds posts that might be similiar.
Having a clean forum would def help the community and the sharing over ideas.
Also Adobe (adobe XD part anyway) has an interesting forum, with upvoting and bug reporting.
I think that a better overview of ideas would prevent duplicate ideas.