From our users in the operation (drivers, crane drivers, warehouse employees, production employees) I have heard regularly the requirement for bigger fonts and bigger buttons.
These people do have large working hands and the tasks and the prefilters in the universal GUI are really small even as the letter size. 

They have no problem with scrolling up and down, as long they can read the info and easily can touch the buttons.

Idea Add BIG BUTTONS in the form or at the end of the cardlist with the actions and prefilters they can do.

And furthermore if we have 3 tasks or more they are hidden behind a really small icon with 3 dots.. That is hard to explain to these people. 

For my 3 clients we’re already talking about 300 people.