For the San Francisco 49ers, 2014 was a disappointing, injury-filled season that ended with an underachieving 8-8 record. Coach Jim Harbaugh was essentially let go by the team, and three players at key positions, Patrick Willis, Chris Borland and Justin Smith all retired. Since then, there has been a lot of unrest among fans as to whether or not this team still has what it takes to compete for a Super Bowl.
Despite everything that has happened the last six months, there are three good reasons for 49ers fans to be optimistic about the offense for the upcoming 2015 season:
1) The offensive line should show improvement. 
There wasn’t a single element of the offense to point to and blame for
the lack of production in 2014. Instead, it was everyone and
everything. The offensive line and Vernon Davis were very banged up, which crippled the offense. Quarterback Colin Kaepernick was
mind-numbingly inconsistent but even the times where he made some really good throws, many of them were dropped.