Well done with Akeeba Ticket System, it's a great product. I've come across a couple of bugs that you might be interested in.
Smart Search Indexer shows "undefined null" in Joomla 3.1.5 when I enable "Smart Search - Akeeba Ticket System"
Running finder indexer via CLI, I get the following error:
Strict Standards: Non-static method FinderIndexer::index() should not be called statically, assuming $this from incompatible context in \plugins\finder\ats\ats.php line 258
If I edit \plugins\finder\ats\ats.php and change line 258 from:
FinderIndexer::index($item);
//change to
$this->indexer->index($item);
This solves the problem.
Also another issue you might be interested in, when installing com_ats-pro v1.2.3, in the file /backend/sql/install/mysql/install.sql, the #__ats_overloads table is commented out with /* */ and the Joomla installer really doesn't like this. I had to manually edit that file to get the software installed.
regards
Tim