The degree of UAV intergration of Russian and Ukrainian forces will be super important too. The US has this stuff down pat after 20 years of GWOT and we've got extensive systems of systems designed to train up operators, have trained low level units in using them as their battlefield close air support systems . This was demonstrated effectively in the recent war in Armenia/Azerbaijan when the Turkish UAV systems were decisive against (lavishly) Russian armed Armenia forces.
https://nationalinterest.org/blog/buzz/has-azerbaijan’s-use-drones-karabakh-transformed-warfare-181526#:~:text=Azerbaijan forces had used Turkish Bayraktar TB2 Unmanned,armor%2C artillery%2C and tactical ground-based air defense systems.