Just for curiosity :3

[GM-Ciar]

While we're on the topic, I'll like to know: do monsters use the spell's limits for cast range, or does a monster's spell range override its cast range?

Just checked using a ranged mob with sonic blow. A monster's spell range can override a skill's natural cast range. Seeker can still stone curse from afar, etc. etc.

I don't know even close to half of the changes since I haven't played until recently for a very, very long time. That's more up to GM team for sure.

GM-Garr would have to answer this one. I did a quick search but most comparisons I found were to rAthena (Like these two).
I just know Hercules can use plugins, which makes life much easier. :D