Qatar will not crumble into ruin economically. Yes, they are looking at their first budget deficit in over 15 years for 2016 but that will happen when you have planned on a $200 Billion infrastructure movement spread out over the next decade and are hosting a very expensive event. They are attempting to build a new city, North of Doha, railing projects and a new port outside of Doha within that decade and if they have the allotted funds to finish. Economically, they're fine to host. Much better than most.
As for the soccer fanship, the Middle East is nuts over it... I spend a lot of time here and it is everywhere. That won't be an issue and it will be well attended by travelers as Doha is becoming a very good tourism spot and Doha is very nice. Won't be a problem...
BUT
As for all other pieces, the workers death rate was astonishing at one point in 2013 into 2014. Almost 1 every day for gods sake. If they can't keep their expat laborer's safe, then they should not be allowed to hire migrant workers... (most laborers are Nepalese, Sri Lankan, Indian and Bangladeshi). Accidents happen but not 1 per day... In that heat? Please. I have been to Qatar (I was there like 3 days ago and it is deathly hot), no way should they have let this happen. It has been better since 2015-2016 and there hasn't been any death's in 2016 which is nice but that's a little late, IMO.
The late November start? Awful. I love the WC in the summer... It won't be the same accommodating the weather for that year. And the bribes? Damn, they don't even deserve the damned thing.