I just wanted to suggest that you put up a list of WordPress versions and their minimum browser version compatibility.
I am new to WordPress (having only used html/css) and used the Frontier theme to develop my new website using browser IE v8. I didn't realise I was making a rod for my own back. I happened to look at my website in Google Chrome and it appears perfectly. In IE 8 the horizontal menu and dropdown feature doesn't work and looks messy. I went around in circles for days looking for plugins I didn't need.
In essence, I think a browser compatibility checklist would significantly reduce the number of forum help requests. I wonder how many problems people post are due to the user running a WordPress version that is higher than their browser version is capable of supporting.
The details of the Frontier theme does not state minimum browser requirements.