Here are just a few things I noticed while reading through your case:
Your thesis is:
"My thesis statement is that Without Pragmatism Idealism is useless."
The affirmative can say:
1. This is not the case, since Idealism is still the pursuit of, or behavior towards a goal.
2. Even if this was the case, this is not what I'm arguing. I'm arguing Idealism above Pragmatism, not Idealism without Pragmatism.
Your First contention is:
"Thought without action is useless."
However, Idealism can be defined as the pursuit of, or behavior towards a goal. Since the Affirmative is going to set out the definition first, and since they will most likely win a definitional debate on that (given that a lot of definitions include the "pursuit" language, I think this argument will most likely be pretty weak if the affirmative has a good definition.
Your value preeminence argument is:
"Security is the highest value in the hierarchy of values because it is a basic need for a human to feel safe in the places they work, play and raise a family."
I'll act as if I'm using my Affirmative case (Value=Human Rights).
I would contest that we should value Human Rights above Security. Take the example of the patriot act, while it grants us a greater degree of security, to achieve this security it takes away the very rights it is supposed to defend. If we value Security as preeminent to Human Rights, then we could end up in an Orwellian society, in which all people are secure from attack, and violation of their rights if for no other reason than that they have all been sacrificed at the altar of Security. Once we grant agencies such as the government the power to remove one set of rights to protect another, we will inevitably lose them all. I would like to end with a quote from Benjamin Franklin, "Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety."
Hope that all helps!