Request: When you start casting, make it stop character movement and autoface the mob

[Majidah]

It's ironic that you are telling someone else to learn to play when you yourself rage about not being able to effectively adjust to recent casting changes.

now this is just a plane QQ thread -.- really you want the game to make you stop? really? how about stop running then click your spell macro or icon, and follow me here,....... stop moving

See, but the point is that its wrong for you to have to adjust to a server error.
Lets break it down:

1- You can't cast while running. = OK
2- So you stop running, your character makes a stop in your screen and you hit cast.
3- You get an error message about being unable to cast while moving.

See, the thing is, you weren't moving anymore. A player shouldn't be concerned with the server problems. Rule says stop running before casting and so you did. Its outrageous to ask for players to wait a second due to latency.
A good game design would mask this. How? Easy, it used to mask it perfectly fine. Just make the face target command automatic.

It doesn't take away from being able to cancel spells, it doesn't really affect anything negatively. If you are hitting a spell button, its because you want that spell to start being casted that second. If you get hit by ifrit its because you chose a poor moment to start casting. This isn't like WS animation lock. It doesn't lock you for as long, just for that one second where the casting begins, and you can still cancel it by moving.

@ OP tl;dr, but no thanks. This game is casual enough.

Having to deal yourself with server latency doesn't make a game more hardcore. It makes it poorly designed.