You guys go in to the gym and just do 1 lift? I thought I was an efficient lifter, but I'd be feeling like I'm wasting my time only doing 1 exercise, even if it is deads.
And to the OP, since you're new to deads, you'll be seeing a lot of carryover in to your other lifts. I feel like when your body gets accustomed to lifting a lot of weight straight off ground, it gets used to lifting heavy weight in all other motions. You'll be setting a lot of PRs soon.
When it comes to a deadlift day, you do multiple variations. start with the traditional deadlift, Then do romanians, pull off boxes, ect. deadlift day or squat day does not mean one lift. it means the primary lift plus multiple variations.