Libgdx has been updated to include gamepad support. It is still an early version of the API, but plugging it into Aigilas was straight forward. This means that local games now support couch co-op again.
When Aigilas was migrated from C# to Java, gamepad support was lost. Months of changes to the code base needed to be tested against the old gamepad logic. After fixing a handful of bugs, very basic gamepad functionality is included in the latest release. Wired Xbox 360 controllers are currently supported, but only on Windows and Linux for the moment. Issues need to be fixed on the libgdx side to include Mac support.
Check out these changes in the current stable edition, v0.6.1.