1. While many fans, including myself, hated to see the Firebat go, I think that the Jackal is an amazing replacement.
2. The second type of splash, line splash, is damage dealt in a line from units such as the Lurker and the Firebat.
3. However, I still did end up losing that game versus the Terran player, as Ghosts later on were able to devastate my army with EMP, followed with their Marauder units, replacing the old Firebat, making quick work of my ground army.
4. The Jackal is the new assault buggy that was the replacement to the Firebat.
5. Correct, the Firebat is healed by Medics still, though in the current build, the Firebat has been taking out, to test a new Terran unit that could possibly fill its role.