This way works perfekt for normal "musical" editing. For a mixdown I normally only use only one to three finetuning effects like EQ, Compressor, Delay, Amp-Simulator, Reverb... The main parameters of this effects are also editable in the channel-view.
For more creative dynamic sound editing like for Dubstep or EDM a more creative approach to filter chains is useful (an fun).
I had opened more than one plugin while searching for a possibility to create a similar view to the shown in the past sometimes accidentally but couldn't really reproduce it.
Tody I tried for a while and found out how to manage it: When I use the "Pin" button and open another plugin from the insert-list with doubleclick or right mouse-button and "edit", it opens in a new window. So i can create a panel of the used plugins.
This is not optimal because I can't switch between views of different channels, or close all effects for one channel with one click, and reopen them, but I can deal with it.
Perhaps it is useful for anyone else. And if Presonus want's to do me a great favour they could add this feature in the future.