"... in fact due to limitations with CoH2’s game engine and therefore the engine itself would need to be updated..."
Horray! They're not principally opposed to game engine upgrade / modification / changes. If I recall, there's a lot of suggestions that have been dismissed on the grounds of engine limitations. Granted, this is a problem with the product already rather than something new to be introduced, so there's nowhere near as much inertia to modifying the engine.
Well maybe , just maybe we se relic turning into devs again after they were only modders for so long...