I have been doing some test importing into the Unity Game Engine.  Lotte from the Eve of Destruction mod for BF2 has created a stand alone version of EOD in Unity and is willing to support using his EOD Redux for Unity to mod for First Strike.   I tried with the Battlecry team on Unreal Engine 4 but they were going for higher quality models, which has stalled out on development due to the amount of work needed to create a game from scratch.    As a mod for EOD Redux, the basic gameplay has already been created.   It would be a matter of importing objects and then modying as needed for First Strike.

I am also looking into importing some things from Galactic Conquest for BF42.   

What I have found so far is that most statics imported from BF2 and BF2142 with 3dsmax import tools have corrupted texture coordinates (UV mapping).  The player controlled objects import much better.   I have not tried importing animations. 

Importing from BF42 works better for statics, but player controlled objects are imported one part at a time.

Is it much better to use the original model, when possible, instead of trying to import from any Battlefield model formats.   

Here are a few test imports (The Echo base Ready room and the Tie Advanced Prototype were ported to Unity from the original models.  The others were imported from the Battlefield model format):