So, worst case scenario, if Waters takes even 6-10 weeks to get completely in game shape, and/or shake the rust off from the layoff (imagine how that helps the little injuries that add up after 11 seasons).....
Well, then we get at the VERY least a superb back-up for the last 1/2 of the season, that can help teach the young oline guys we have like Smith and Frederick. If he still "has it" then we get an above average starter, which is a HUGE upgrade, HUGE compared to our play last year, and the potential for this year, even with an emerging (yet dinged up already) Leary!
This can't be anything but good and puts a bit of competitive pressure on Bernie and Leary as well, which with the lack of depth was non-existent.
This is a good thing to give a try on. The guy was a pro-bowler and not injury prone etc....