The 3D models are nice but very simple. The plugin works and isn't too buggy but overall I just think that they seem out of place when everything else is just a bunch sprites. Hopefully this might help bring bring together a mod that shapes Marathon into a 3D format.
This plugin will replace all of the standard Infinity weapon items, ammo boxes and powerups with proper 3D equivalents. A demo map featuring all of the new models has been included.