More hotbar slots:
This could be done by:
Pressing a customizable key like “t” to switch between 2 hotbars.
Or just make more slots with also customisable keys.
This would make weapon/consumable managing much easier in you’re hotbar.
Rather than more slots, I feel like there needs to be a separation of weapons and consumables selection. Consumables on the hotbar, weapons somewhere else (maybe have one of the hotbar slots dedicated to “weapon selection”, then scroll wheel through the weapons? Or vice versa).

yes
the second would be better, my hotbar is full all the time and I want to put more in it (faster firing gun) but also keep what I have, I play MP and have revives so that takes up an annoying spot