Re-masters/releases are some of the cheapest games to produce. Therefore my money would be on them most certainly releasing the next expansions in the series re

Re-masters/releases are some of the cheapest games to produce. Therefore my money would be on them most certainly releasing the next expansions in the series remastered as well. Whether the customer-base for such a remake game series is primarily predatory on the current 'modern' game remains to be seen. Some retakes have been far more successful than their original bloodlines. Everyone always references OSRS, as that is also an MMO and therefore the most comparable, but think about the successes of the 'Age of Empires II' series still going strong where AoE3 was not longlived.