If the scale of SD44 is not bigger than the previous RD , I think full controllable is right better , much more flexible than an auto formation . Even now in RD we would change the relative position of recon/AA/arty/tank/ATGMs frequently depending on the changing tactical situation , a preset formation will be too dull and vulnerable to a well-controlled combined attack .
Just a suggestion , when playing WG , don't think in 'formation' , think in 'systems' . Adjust ur units position based on enemy units to build a full combination of weapon systems to counter ur enemies' units , not based on ur own units and try to make them look 'invincible'.