Check out this thread for some similar discussions --
Are there any relatively quick ways to succeed? -- but I don't tend to give QBs more than 2 or 3 seasons of starting before moving on if they don't seem to have what it takes. And as I mentioned in that thread, for FOF8 it was all about Sense Rush and Intelligence -- Daniel Jones has got good Sense Rush, but the Intelligence is underwhelming. Look around to see if you can find a QB that fits the Sense Rush/Intelligence bill & give them a try!