The model looks nice. However, there are not intentions to replace the Herakles transporter right now. Adding some sliding doors to the pod would be nice, though.
What we are indeed looking for is a replacement for the Raptor. But this is built using alien components and thus should look - well, more 'alien'. Also, the size of any replacement or new dropship model (used within the maps) has to be equal the Herakles' pod or Firebird.
Furthermore, the cargo bay needs to have more than one entrance/exit for the soldiers. The Firebird did this well, the Herakles pod is just a freaking trap (thus needs some additional doors).