Hey there Icecrown,
I've been playing lots with this mod this weekend, and have a few comments Most of the effects, especially the higher level spells, go on for a bit long. The game doesn't let you do anything until the particle effect plays fully, so with a lot of casting often you have to wait an extra second or so each spellcast without anything really happening - for example, Melting Touch waits for the ground to change color back to normal from burned. This happens after the effect plays, and delays next actions even though it's not really essential and you pretty much have to look at it to notice.
Sandcrawler Shaman uses a Fireball ability, which does not actually use your particle effect. It still has the old one. The Fire Giant is also using Fire spells and could use some love.
On foot, there are 3 different casting animations for the Sovereign/Channeler models, and only the first one includes your casting/travel effects. Mounted, there's only 1 animation and does not include your casting/travel effects. Very noticeable with Fireball. Mounted and with 2 of the 3 castings on foot, the only effect that plays is the target tile hit, not the cast or projectile travel.
The effects themselves look awesome, though. Can't wait for more of your stuff