Casts that are 2 seconds or longer can too easily be avoided by breaking los/running out of the casters range. This is especially noticeable on the 3 second cast of bw/sorc, to a point where i would consider these abilities not usable without instant cast tactics.
Suggestion:
Revert the range and los check back to how it worked on live for abilities with long cast times where the caster has to be stationary.
This will be my last caster balance suggestion. Gotta level a mdps next
