Myth/Oblivion hybrid co-op patch online-concept

It occurred to me these two games have very similar imagery, combat mechanics and lore over their respective terrain within the game maps.

How hard/expensive would it be-I wonder- to use the existing mechanics and programming of both games to create a sort of “small” multiplayer situation where teams of maybe up to maybe 4 co-operative players handle different aspects of a classic multiplayer myth game but set within the landscape of skyrim? The idea allowing for some team members to use their oblivion character in 1st person to influence the rts and outcomes of the standard overhead myth battle that their team mate is seeing and controlling in classic myth style.

Rowdiness would ensue!

Since the graphics, rendering, physics are all established and working for both games it’d be a pretty sweet mashup to the point where they could be enmeshed pretty deeply especially given modern game programming, no?

I imagine a lot more Myth fans are also familiar with the Oblivion series than vice verse.