How do I show all projects 'excluding' project x & project y... and then all projects 'excluding' project x & project y today?
Unfortunately, including or excluding projects in queries is currently not available, but we will add such option in future updates.
This is really an essential function. Please consider adding this capability soon.
Kate, the web interface actually DOES allow searching for or excluding projects very recently. It hasn't been included in the mobile platforms yet, so it hasn't been officially "announced" other than here in the support group, but it works.
If you wanted to exclude project1 and project2 try this:
:all: & (!p:project1 & !p:project2)
Similarly, for your today request, try:
today & (!p:project1 & !p:project2)
It seemed to work for me, anyhow.
Took your work around and created a filter - it is then available both through the web interface and on mobile (Android & iOS).
7 days & (!p:HomeProject1 & !p:HomeProject2) will just give me work projects due in the next 7 days!