In my opinion vanilla haste (level3) is op and unfair on vanilla because we can have a lot of benefits from better speed while IA will not take advantages about it so much.
If haste (level 3) remain to be a AoE spell, at least it should be less powerfull in comparaison to vanilla one.
I like it
For what is worth I always play with the component " use BG walking speeds" (tweak anthology forum) because the increase of speed really makes fights easier and unfair for IA.