Last year's offense was lead by an incompetent, stubborn and dull OC who repeatedly refused to run the ball no matter the score or situation. To the surprise of everyone around the NFL he will be returning. Now the front office has chosen not to re-sign Rick Wagner, arguably the best RT in the league. They've let Juice go, which was a good call, but you are losing the best FB in the league and most versatile player on your offense. And your hall of fame WR just retired.
The front office talked about building an elite OL being a priority, but the current starting RT is James Hurst, who will just get Flacco injured once again. There are no quality RT's left on the market and OT is often called the weakest position in this draft class. Even the few good ones are pretty much all LT's, and moving a guy to the other side of the line isn't always easy. Also, there are a number of teams desperate for tackles which could lead to them being over drafted. And Ozzie usually goes BPA by need. Center is now a huge need as well and depth is needed across the board.
TE: There's like 10 on the roster, but none of them have shown the ability to be a quality starter. Pitta completely limits the offense and none of the young guys have proven to be anything more than a move the chains type receiver. It isn't a bad group, but it's not dynamic at all and Flacco needs more help.
WR: No real number 1 guy here. I like Wallace a lot, but he will be 31 and could lose his speed at anytime. Perriman has amazing potential, but has a long way to go. He's faster than every DB in the league and bigger than 95% of them, but hasn't shown he can make more than the occasional splash play. There's nothing behind those two in terms of potential starters. So this seems like a below average group with the potential to be okay.
RB: Dixon got himself suspended for 4 games. Nice job Kenneth! West is an alright power back at best. Woodhead could be a great addition but is a 32-year old coming off an ACL tear. Lot of question marks here. Best case scenario it's a pretty good group.
And on top of all of this you're relying on Flacco to return to his pre-injury self. I've always been a Flacco fan, but he regressed big time last year. Right now Flacco needs help more than ever, but the exact opposite is happening.
We obviously still have the draft along with a small amount of money left after some more cuts, but that's a lot of immediate holes to fill. Right now we easily have one of the worst offenses in the league. The front office has never drafted a great offense and this is a very defensive heavy draft. Hard to say I have much faith the offense will be any better next year.