humn, for templates, you could check This Link, its got a bunch of templates for diffrent types of, unfortunately, one of the godot images is broken, but if you go here and click "Assigning properties to multiple tiles at once" you can see the one godot recomends just above it, its the standard template but personaly i prefer this one since i feel its the optimal one.
will the expansion be a seperate pack or an addon to this pack? *peers* now im curious! and will there be monsters and minions and npcs in it? =D
so those seperate tiles, how are they set up? like most tileset with the *entire* "first" set followed by the second and so on? or individual tiles with its entire animation chain? (gods i wish i could doo the 2 peering eye balls here xD)