Re-evluate ....maybe!
De-peg....Never!
The love hate relationship between this region and uncle sam is too solid for that! Remember that in case of Qatar their whole defense system is provided by the Americans ( besides the small part of the French with 7 Mirages and some other things).
Besides that, somebody brought up the fact in one of the EK treads that those in power of countries like Qatar do not really care if there is inflation or not, they do not care about dollar-euro exchange rates as their assetts are all very well protected outside the country!
So they rather keep a good political relationship with the states iso stepping on their toes just to deal with inflation and purchasing powers of the labourers ( YES, YOU AND ME AS WELL)
Lets wait and see...