I still feel Cutler shot his career in the foot with his 2009 off-season bitch fest. But it (indirectly) led to Peyton Manning coming in, so Bronco fans have forgiven/forgotten about that.
I liked Cutler's mobility when he was in Denver. Haven't seen much of him since the 2009 trade, so I don't know how his mobility is. I think Trevor Siemian is a good "beater" and hopefully Paxton Lynch pans out. If Lynch has any issues in the 2017 season, then I think they definitely need to make a new QB a top priority... in the 2018 off-season.
O-line is the top priority for 2017. Running back is a mild concern, as CJ Anderson's been somewhat injury-prone and Devontae Booker didn't exactly impress in 2016. Would like to get one new LB or DL in there, as well.