Find-in-Path could use attention in Maia when it comes to exploring large, unfamiliar codebases with diverse file types and ultimately modifying those codebases. If you are very familiar with your codebase or if you have predominantly java files, then these may not be as important to you. But when you have a vast sea of source like xml, ftl, groovy, java, scripts, properties files, js, jsp's, and more, then you too might want more Find-in-Path power.
Here are a few improvements I could use, some already with JIRA issues:
Allow exclusion file name filtering in Find in Path dialog http://www.jetbrains.net/jira/browse/IDEA-23316
Allow multiple file matches in Find in Path dialog http://www.jetbrains.net/jira/browse/IDEA-22326
Provide Find in Path with a Custom Scope of 'Files open in Editor' http://www.jetbrains.net/jira/browse/IDEA-23318
Find-In-Path: add interactive searching on results pane http://www.jetbrains.net/jira/browse/IDEA-22988
Grouping by filetype/extension in results pane
Unfold results pane just down to the filename
Exclude file list from Find-in-Path
It would take a commitment from JetBrains in Maia to expand the power of Find-in-Path. Anyone else exploring & changing large, varied codebases and would benefit from increased Find-in-Path functionality? Do you have other Find-in-Path improvements you've been wanting?