Quest has a GUI, so couldn't we have a GME (Graphical Map Editor) along with the other stuff in the Map tab? Just like ADRIFT?

It's technically possible, but I don't think it's high on Alex's list of priorities for the program. However, if you're a solid programmer and want to tackle it, you can always download the Quest source yourself and add in the feature. If it works well I'm sure Alex would merge it back into the main source repo for inclusion in future versions of Quest.

In the meantime, I like to use a little program called Trizbort to help me map out complicated places. It doesn't export into Quest format, but it helps give me a visual representation when I'm setting up the rooms in Quest.

What a co-incidence! I use Trizbort too! (Althrough sometimes I stick to good old IFMapper)

I'm not familiar with those tools. Are they really super helpful? 'Cause I was just gonna stick with graph paper and a pencil...