I think it would be a great and kinda sick idea to make a map that is like the old world. pre ice age or flood (whichever, you believe in)
This make can have alot of what people would want like snakes, sabertooth tigers, you can through in mammoths, Komodo dragons and other prehistoric animals but you can only use prehistoric weapons like very select gunpowder or a recurve bow to hunt these animals,, and no great ones but just larger animals with very unique tropys like a mammoth tusks to hang.
we can also add smaller or even larger dinos if possible to increase animal numbers but you HAVE TO HAVE THE DODO BIRD