The new Sentinel units descend on the battlefield in a suit of hyper-ablation power armor that helps them withstand large amounts of punishment. Once they reach the enemy their powerful grappling claws will rip and tear the structures apart.
Best of all, the Sentinels are an extension of Galactic Union technology, which means you will not need any special items to fabricate and train these units!
Train these new troops and show your enemies that the best offense is a good defense!
Massive amounts of Health, making Sentinels fine walls for your troops.
Training Time which increases as you "Level Up" your Sentinels.
Too much warp space to be uniquely useful at level 6, as a Decimator or Incineraptor can do anything far better and can be deployed in the same numbers, in addition to being nearly as expendable thanks to troop MBs and the like