The idea of there being 2 dual seeking functions and 2 polrs is pretty interesting to me. Lets use IEI for example. IEI has Se- as its primary dual seeking function and Si+ as its secondary dual seeking. What I think this means is that IEI visibly seeks someone who exerts power and control (Se-), but the deeper motivation behind that is that they want feel safe and comfortable (Si+) and to do so they need someone who can protect them physically. ILE has the same dual seeking functions but are they orientated differently. ILE wants someone who outwardly focuses on comfort and harmony, but inwardly what the ILE really dreams of is having power and control.
I think the same can apply to the polr functions. ILI on the surface hates boisterous emotions (Fe-), but on the inside feels oppressed and inhibited by rules (Ti+). I'm going to hypothesize the real "polr" hit for ILI is not just crazy emotions, but when people get emotional at ILI for not following the rules.