Most turns you end up spending a lot of time deploying the exact minimum amount of armies on a territory to ensure expansion into the next one territory. You have to keep changing between the deployment and the move/order phases to do those minimal deployments and moves for every single expansion locale, on large maps it's easy to lose track of areas where you deployed (thinking of expanding) but then forgot to submit the move order because you didn't want to switch to move phase just yet before deploying some more. My suggestion to facilitate this repetitive and often error prone activity is a hotkey (maybe 'e' for expansion if it's not being used already) that you can hold down during the move phase and when you do a move order from x to y it automatically figures out the minimum number of armies you need to deploy on x to accomplish that minimum expansion move and deploys those for you.
Vote if you carehttps://warlight.uservoice.com/forums/77051-warzone-features/suggestions/37808149-hotkey-to-autodeploy-for-minimum-expansion
Or take this wonderful opportunity to revise your uservoice votes and comment on other peoples suggestions, that would also be swell.