If this annoys you and you can't work out how to fix that annoyance or work around it then messing around in /var or /bin is going to ruin your installation. Having a barrier to entry is often a good idea IMO.

One could solve it by having a "reveal content" button that allows you to enter the dir by entering the su password ... but I think that makes it a little too easy.

For me Alt+F2 and "kdesudo dolphin" doesn't seem too tricky (especially with autocomplete) to get a root fm.