My main gripe is that Apple chose to very aggressively kill or sleep apps running in the background.

I can understand this from a battery perspective but why not give us an option to let certain apps run in the background, especially when the iPad is plugged in to power.

As an example, if I start a download in Safari, I can’t use a different app until Safari finishes the download. I could use split-screen but who wants to watch a video I split screen.