Prevent apps from automatically starting as floating but keep size
I installed i3 as the window manager on my RPi running Arch ARM Linux. The device i am trying to set up is serving a specific purpose, which is audio level monitoring. I am running into several problems while doing this, specifically because a lot of the tools i want to use are starting itself as a floating window somewhere on the screen. If i force them to a tiling window, they don't scale with the window but use the space they always did, and leave the rest of the window unused. Really, i dont care if they are floating or not, i was thinking that a tiling WM would help me simplify setting up the desktop but really, it does not so far.
So my question: is it possible to start an app in a tiling window BUT with the size the app originally would have opened as a floating window? i know that i can force a floating window by matching the title etc. but that seems rather complicated to me, since the WM should know the size the app needs to start in already.