Why doesn't the boiling point of an aqueous solution depend on intermolecular attraction? I understand that boiling point is a colligative property for aqueous solutions, and that it empirically depends on the mole fraction of the solute, rather than the identity of the solute. I understand the van't Hoff factor / ionic strength and why it matters. I also get that an increase in entropy is the primary driving force for boiling point elevation. 

My question is, why does the influence of intermolecular attraction go out the window for solutions, as opposed to pure substances? Shouldn't the identity of the specific dissolved species - that is, their charge and their size, affect the intermolecular attractions in the solution? Shouldn't greater intermolecular attraction increase the boiling point by reducing vapor pressure, just as it does for pure substances? For example, neutral molecular solutes as opposed to strong electrolytes, or large ions like iodide vs smaller ones like fluoride.

Is the effect simply too small to matter compared to the entropy factor, or am I missing something theoretically?
GOOD QUESTION! That is the nastiest p-chem question I've seen.  Atkins, Physical Chemistry 2nd edition (the readable one), pp 228-232pp.  Boiling point elevation is presented as purely an entropy effect, given two assumptions:  

1) The solute is non-volatile. 
2) The non-volatile solute does not dissolve in the solid solvent. 
Both assumptions are explored in Chapter 10.

A solute increases the entropy of the solution but does not change the entropy of the vapor at a given P and T.  A higher T is then necessary to give the same entropy difference.  I am not satisfied that this wholly addresses a strongly interactive solute versus a non-interactive solute versus a strongly negatively interactive solute,

http://www1.lsbu.ac.uk/water/kosmos.html 
Kosmotropes and chaotropes

http://www.amazon.com/Physical-Chemistry-Peter-Atkins/dp/1429218126 
Atkins 9th edition is current. 
"There is almost no chemical concept that Atkins can't make unnecessarily confusing"
http://www.amazon.com/Physical-Chemistry-A-Molecular-Approach/dp/0935702997/ref=zg_bs_16052591_2 
Library - it's pricey. 
http://www.amazon.com/Thermodynamics-Engineering-Approach-Yunus-Cengel/dp/0073398179/ref=dp_ob_title_bk 
Library - it's very pricey.