Keep in mind that link that you posted was made by a dev in 2012 before HotS was released and is therefore completely outdated. The dependency usage policy has changed since then.
You can now use any of the main expansions (HotS/LotV) and DLC stuff like the Nova Covert Ops assets in your map without any accessibility issues for your player base, as you only need to have the Starter Edition to play on the Arcade.
People don't have to own HotS/LotV/Covert Ops to play your mod, so there is no need to make separate versions of your mod. You can stick to one and you'll be just fine.