Would it be a deal braker,, NO, because you can fix what's wrong with it easily.
We often talk about a motor home "Waging" like the tail on a dog, In this act the front moves a bit to well let's say the left over the axle, while the rear swings right, it makes you the operator THINK you are angled and thus you correct,, When no correction is needed, and this makes it worse...
The solution is to add a Trac Bar....
With IFS, well, the IFS half axles, double as front trac bars.. So that's one less problem. and that is the major advantage of IFS.