[2022] So, I bought the Schroder

Have to disagree with you here.
Schroder's agility is not even in the same league as Agir. Schroder has a 15% speed-booster on a German Large Cruiser. That's pretty bananas. Not only that, it's on a Large Cruiser that specifically is bristling with secondaries, meaning you can chase and "lock down" ships in your secondary range and guarantee kills in many cases. Like a number of other DY ships, Schroder takes some time to find her strengths, then get good at exploiting them, but the speed-boost is a game-changer for something with that much upper-hull armor and that many powerful secondaries

It's actually not that big or ungainly. I keep seeing people call it the same hull as Agir / Siegfried - but it's not. It's more maneuverable on it's own and with the speed-boost it can do a lot more. I almost always take prop-mod over rudder, but I might try rudder as I find myself running down other DD's and cruisers and needing to swing my nose alot.
It's actually a fair bit skinnier than it's two "sisters".
Also, I'm seeing people mistaking the dispersion of the secondaries. It has the same base dispersion as the Preussen / GK line.