I will start things off myself with a couple of suggestions.

Multiview

Firstly most WHDLoad installs in the KGWHD packs include readme and manual files. These are all setup to load in Multiview. However Multiview is a WB3+ only utility so when you try to open them in the GAAE setup on an A600 it can't find the utility and you get an error.

I've been looking on Aminet and there seem to be some Multiview replacements available that work with WB2.04+. I'm going to give these a try later and if one of them looks good enough I will give details here and suggest it should be included in the next version of the GAAE package.

Floppy drive no click utility

I don't know if it is just my A600, but the anticlick utility included with ClassicWB GAAE doesn't stop my A600's floppy drive from clicking.

There are a number of other no click utilities available on Aminet so I'm going to try them out and see if any work for my A600. I will post details once I've tested them.