New portrait for completing all campaign achievements

I recently completed every single campaign/mission pack achievement including every single 10th anniversary achievement in StarCraft 2, and I know that that does give some banners to use, but I was wondering if it would be possible to get a specific portrait added so that those of us that have done the grind would be able to show it off at all times in lobbies, chats, etc? Thank you very much for your time and I look forward to hearing back from the team.

There is no team left, and in 2020 they announced no more content.

Maybe they will do a portrait or two for some special event (like another Serral face), but I doubt anyone will add anything to already existing features.