I recently tried out a new user addon in World of Warcraft that allows you to customise your tooltips (TipTac).
What surprised me most was a feature that automatically displays tooltips when you hover over any item link (or link in general) in the chat. The tooltip disappears when you move the mouse elsewhere. No clicking, and it felt super natural.
Normally, tooltips only show if you click on the link and then find the X to close the tooltip window (or hit Esc). In Diablo 4 it is similar, but with the added annoyance of having to open the chat box (where you type) first. I think this questionable decision was made to avoid misclicks, as item tooltips are quite large. This is no longer an issue with mouseover.
Therefore, I suggest to add the mouseover display feature to the chat window. Thank you.