That is my thought too. Also, what other accessories would you want? It is nice having a tire inflator too, along with drill and screwdriver for around home use.
Me, I went Makita but I use the seriess more for non auto stuff—but same battery for all.
I have a mix of nonsense - mainly gifts, or stuff I bought on sale when I needed it. Roughly split between Ryobi and Dewalt, with some random stuff mixed in. (So poor planning on my part).
For accessories, I do have a Ryobi inflator that works well - it uses the battery from my 1/4 driver.
What kind of screwdriver are we talking about here? I'm intrigued. (I have a Worx screwdriver I use constantly - I thought it was a dumb gift from my mother-in-law - but it gets used constantly and never needs to be charged).
I just replaced a 12v clapped out Black and Decker drill with a 20v Dewalt - which was my jump into the Dewalt bumblebee world. I not a big tool guy, but was shocked at the torque difference - I always dragged out corded stuff if I needed to drill into wood or stone. So, I figured now might be the time to jump into a bigger impact for lugs and brake work.
My lawn stuff is 40v Ryobi - trimmer, weed wacker, chainsaw. (I'm slowly moving away from gas).