Okay...
Are you going to share your experiences with them? If you have something to say in defense of those skills, now is a good time. Please speak up and tell us.
Well you seemed very firm on your position regarding the topic so i got the impression you wanted to discuss how they should be changed instead of debating if they are fine in their current state.
Now everything can be improved so i am not against changing them, just as i am up for changing anything in the game.
They cost 1 ap which is the primary reason why i use them every now and again, it is not like they are key spells to my victories, but after a bit of fighting so is there usually quite a bit of blood, if the opponents are in the blood (which they often are) i usually do the contamination followed up with ignition combo to deal some aoe damage on them, and yes of course i need to first make sure my own guys dont get hit to hard.
I rarely use global cooling, but that is often because my hydrosophist mage is busy doing heals, frost armor and such stuff, so i lack some experiance with that one.