Too much money and term IMO based on Wagner's age and what I saw from him when we played Seattle. But as I said in another thread, if the Rams think Wagner is worth it, I will defer to them fully. This head office almost never misses on its UFA and trade acquisitions. It is pretty surreal. Von and OBJ were questionable pick-ups at the time too. They both worked out amazingly well. There is no way the Rams win the Super Bowl without those two IMO.
In the short term, Wagner is doubtlessly a big upgrade at a position of weakness on the defense, regardless of what you think of the contract.
If the Rams get another quality CB, I actually like the defence better this year than last. It will be much more well rounded. Its pass rush even pre-Miller was very good. But if we can eliminate the LB and CB holes... look out. We would all want our pass rush going from "good" or "great" to "other worldly" like Miller made it. But with the A-list pass rushers gone, it seems the Rams have understandably chosen to pivot.