Just had a crazy idea regarding Mk2 transports I thought I'd throw out there (I know, talking about transports, in this thread? I'm so behind the times..):
What if they were intended to be 1-way? For example:
-Cloaking, but no attack
-High armor
-Unloading in enemy territory self-destructs them
-On death, they damage nearby units and deploy a forcefield - both damage and forcefield strength are based on the number of units dropped
-To prevent cheese, can't be loaded in enemy territory
Basically, they are like transport-warhead combos. Or drop pods, I guess.