I am a long time maplestory fan. I started playing a couple months after it first released. So many systems have been added into maplestory that feel like an investment. It started with Empresses blessing, then like skills came, evanetually character cards came and morphed into the legion system we have now. I loved that part of maple as an mmo, it gave me a reason to continue playing and and investing into my characters progress.
One of the most effective investments reboot players can make, is to make another account with a kanna on it. As long as you had a spare pc or a virtual machine, you could participate in the 2 pc meta. But not only do you have to have another account logged on with a kanna, you also had to train your kanna up to 210, 220, and so on to follow you to better and better maps. This is an investment many of us dedicated players have made. For the moment I am going to ignore the spawn rate nerf of kishin and just focus on the cool down.
For those of us that used an afk kana to train we now have a drastically reduced effectiveness in grinding half the time. For kanna mains, if you one shot mobs(which is a natural goal to reach for when farming), you will barely ever proc the extended 5 seconds. Both types of dedicated players are going to feel a huge impact on their grinding rates. What is the reasoning behind this change? To diminish the dependency on kishin.
Instead of solely changing kishin to decrease people's maximum potential for grinding, you can increase the minimum rate of grinding. If you increase a maps base spawn rate and nerf the effectiveness of kishin, you can diminish dependency on kishin without directly nerfing dedicated players grinding rates. I'm no game designer but i do know a thing or two about numbers. Currently kishin both increases the spawn rate of the map by 50% and increases the maximum number of mobs by 50%. Lets go ahead and "nerf" lets say its a 25% increase in spawn rate and 25% increase in number of mobs. If we also increase the base spawn rate and number of mobs by 20% then we end up with the same maximum potential but a closer minimum.
The math:
Let's call the current base spawn rate 100%
Now with kishin 100%*50% = 150%
Post rise 100%*40% = 140% (up only half the time)
Proposed changes 120%*25%= 150%
There are more elegant solutions that don't devalue a players investment. Kishin has been left in the game for so long it has shaped the game around it. Nexons nerf to kishin makes it seem like they are out of touch with their fan base.
