Yep, same here. Menu isn't on the 'movie' disc, as I don't see the point. The menus are only included on the 'extras' disc, as I don't want to watch everything. Menu structure retention is a very useful feature, one that DVD Shrink lacks when reauthoring.
To save space I always remove the audio I don't want. This is one of DVD Shrink's and Recode 2's strong points.
CloneDVD2 also has this feature.
Another strong point for me is that when Authoring, DVD Shrink displays all the files on the right so you can see right there what you want. This is important to me because sometimes there is more than one title, like fullscreen and widescreen for example. I can view them and select the one I want. Nice feature.
Ditto for CloneDVD2.
So it's up to the habits you have, the features you want, and just what you like to use. To each his own.
Yep, it really is 'different means to the same end'. DVDShrink is a very nice tool, tho it is beginning to show it's age. The other features you mention have merit, I just wish the program was still in development.