Hello Patrike,
Some ideas that you can implement:
1. Possibility to "auto sort/auto refresh every X seconds" by last used column in Main/Miners window. Right now I can't list over 100 active miners at the same time even on 4K Portrait oriented monitor. This is why I have to double-click "Status" or "Performance" tabs at least once in a minute to see if there is a miner with a problem (disconnected, with high temp or low hashrate). By adding "auto refresh" the miners with problems will pop up at the top and will be easier spotted.
2. If it is possible add an functionality to split the list of miners like it is in Excel sheets: https://youtu.be/LMtR_Oe1pHk?t=410 The idea here is to have visibility of the top of every group of miners in different panel and combined with the previous idea to have visualized the problematic miners of different groups  at the same time.
3. An option to enable/disable visibility of Description, Status, Progress, etc. tabs.

Have a nice day.