With the new Endless War missions, the focus is mostly on controlling objectives with only one mission which sees destroying enemy units as the main goal.
The notion of scoring units has also evolved, extending to other force organization selections from just the previous Troops. This also provides a new "tool in the toolbox" when it comes to scenario design for those looking to go beyond what's in the rulebook. Denial units have also evolved and some selections now cannot prevent an enemy from controlling an objective. Most notably, vehicles and swarms.
This shift in how objectives are controlled should now make selecting your army a bit more challenging. Mechanized armies lose a lot of capability for denying objectives, except for the 'Big Guns Never Tire' mission and in 'The Scouring' mission Fast Attack selections count as scoring units.
With a full third of games now played with a short table edge as a player's board edge the ability to maneuver, deep strike, or even outflank becomes a reason to reconsider the effectiveness of some units which may have been left on the shelf previously.
This shift may see non-competitive armies closing the gap between the lists seen traditionally as more competitive ones. Keeping the more competitive nature of the game in-check will almost certainly lead to more fun for everyone - and more diverse armies on the tabletop.
Army Balance - Levelling the playing field.