3run: Why are you asking here at all when you don't even read the answers?
Gamestudio already has all that you will ever need for animation, the only restriction is the model you are using, or your script. There are only two functions that you ever need, ent_animate for animation and ent_blendpose for blending. Both work perfect and both are explained with examples in the manual and tutorial.
You can get any possible animation, combination or blending with just those two functions. I can not see how it would be made any easier with other functions.
Pseudocode:
// walk animation
my.pose = 1;
ent_animate(me,"walk",....)
// stand animation
my.pose = 2;
ent_animate(me,"stand",....)
// blending walk + stand
ent_blendpose(me,1,2,blendfactor);
When your entity goes from walk to stand, just let the blendfactor run from 0 to 100. This is as simple as it gets and you have full control over everything. When you cant do that, how will you ever learn to script a full game?