Wreckage of destroyed units
one reason TA was so great!
One of the key reasons battles in Ta (and SupCom) were so great was the wreckage of destroyed units left behind - showing the field of battle and level of destruction. In addition in TA they also often provided a vital source of metal to continue the battle. IMHO, games where wreckage magically disappears into vapor loose a significant element that makes the battles satisfying - and which can also impact gameplay by obstructing movement or providing resources.
One of my criticisms of Ashes in this early stage is that the units and battles feel somehow insubstantial.. with units floating over the battlefield, and no wreckage to indicate where major battles have occurred.
I recognise there may be a unit cost to retaining and recording / displaying the location of wrecked units, but feel with Ashes vaunted ability to handle such large unit counts that this would be a very valuable addition to the game.