BASG did an article on things to watch in the Bronco's game: http://www.bayareasportsguy.com/there-are-plenty-of-reasons-for-49ers-fans-to-watch-tomorrows-preseason-game-broncos/
On the WR front it did get me thinking, we're in a much better place this season than last beyond Crabs being injured. We started with Crabs, Manningham, Moss, Williams and Ginn and we finished with Crabs, Moss and Ginn. Kaep and Vernon took a while to get on the same page.
When you think on it, Manningham has always been inconsistent but he had some good plays with Kaep befor ehis injury, Williams I think was starting to break out a little but we were also relying on Moss who got less interested as the season wore on and Ginn who has always been more of a return specialist and then VD in the play-offs.
We're obviously missing Crabs this season, but we've got Boldin who's the same kind of receiver and seems almost ageless (base don last season) to pick up the slack until Crabs comes back. Williams should be fit and ready to go and hopefully carries on from where he left off. When we get Crabs and Manningham back at the same time we should have some good veteran depth to the core.
We also have Collie and Moore who are certainly an upgrade on Ginn and have more experience than Williams.
Further to this though, we've got AJ, Patton, Lockette (and McDonald) who we are looking to develop and this is really a perfect opportunity for them. We'll be able to ease them in a bit with Boldin, Williams, Vernon and our RBs to carry the offense, and allow them to adjust to the pace of NFL games. For the 3 of them it will be a bit of a sink or swim experience but the point is we won't be reliant on them (barrying an injury to Boldin and then we're in trouble!!).
Also aiding their development is the fact that we have Kaep on the team - if the camp reports are true he's dramatically imrpoved from this time last year and shown considerable imrpovement from end of season on his touch throws and range of passing. With that improvement added to his massive running threat (and that of Gore, LMJ and Hunter) it's going to ease the coverage on those young guys and give them more chance to improve.
How do opposing defences cope? They're going to have a number of threats to account for before they begin to consider AJ, Patton or Lockette and that should give them a chance to develop without being the focus of the opposing defense.