Most are not new, but so they are all in one place (most are features, only a couple of issues)...
1) Add the ability to import the lights in the HDR chunk from another model (as well as mass data, etc.)
2) Allow the import of _selective_ chunks from another model (for example, only import the FUEL chunk)
3) Delete unused vertices (use a post process scan)
4) Take a serious look at the shield problem
5) Add a "default import" and "default export" path to the settable options.
6) Related to #1... create an "automatic light generator" that creates the lights in the HDR chunk, Type 2 lights where engine glows are and Type 1 lights for gun and missle points.
7) Do a check on all the polys while parsing to see if they are flat. Report _warnings_ for all non-flat polys. (use simple plane equations, derive the normal of the plane using 3 points of the poly, check if the 4th through nth points reside on the plane surface, allowing some fractional deviation for the inaccuracies of the floating point math).