in those projects you use the same custom field, for example Priority
you want to see all task in all projects that have priority 1
You can do this via Advanced Search;
Advanced Search > Add filter > Add Custom Field > Choose the custom field
you can choose a particular value for the filed (for example if you want to see only Priority 1)
you can choose “with any value” so you can list all tasks that have any kind of value
you can choose “without value” so you can see which tasks you need to prioritise
A limitation is that once you run the search you will see all tasks, but you cannot sort them further.
A more cumbersome way will be using Asana Rules.
You can create a “Master Project”
You can create a Rule for each project New Task > Add to Master Project
You add the custom field Priority in all projects, including the Master Project.
Then you can sort in the Master Project.
Looks like I’ll have to try the Master Project approach and see if that works. I’m using priority so that I can see and sort priority across all tasks, not just search for one value. Shame that the native Home page seems to have such limited utility and customizability.
Your best option is to use Bridge24 for Asana. This tool displays all tasks across multiple projects. You can sort your tasks by any custom field, either by using the Grid or Report views.