Hi georeb!
In fact, holding the left-croll came from the way the selection of the object, and the selection of the object migrated from the mobile version of the game. I think I can redo it in the near future, I actually wanted to do it for a long time. Similarly, I would redesign the way the icons in the various menus are highlighted so that you don't have to click on them every time you want to read information.
Right now the game uses your screen resolution, but some menus and icons are carried over from the mobile version of the game and may be large, I will resize these elements in the future.
I think soon I will choose one of the days and work on these improvements.