When NEEDINFO got changed from a status to a tickbox, we lost the way to see in a list of bugs whether it's still waiting on reporter or not. It would be nice to have that back to save having to go back into each bug only to find nothing can be done.
There are two options available, depending on what you are trying to achieve.
The first option is when performing the search, you can use the 'Advanced Searching Using Boolean Charts' to match for 'Flags' that 'contain the string' 'needinfo' (or 'needinfo?' if desired). This will return all the bugs that have this flag set.
The second option is once you have the search results on the screen, use the 'Change Columns' option (bottom of the page) and add the 'Flags' column to the 'Selected Columns' list. This will display all flags for a bug, but will include the needinfo flag.
There are no plans to show selected flags for a bug given the above two options are available.