Life long Browns fan here.
I am a realist Browns fan and don't usually sip on the Kool-Aid. When the Lerner family brought the team back to Cleveland we were excited. Then Al died and his son took over. He threw money at the team, but never let anyone have too long of a chance to get things rolling. With the new ownership taking a more proactive approach to the team I can say I am looking forward to this up coming year. It feels like the reboot the organization needed.
Some concerns, definitely.
We once again have a rookie head coach. From everything I have read about the man, I think they made what they thought was their best choice. He didn't follow the mistakes of the old regime and trying playing offensive coordinator as well as head coach. He surrounded himself with fantastic coordinators in Norv Turner and Ray Horton. These two are going to use the players' talents to form the system and not force players into a system that doesn't work for them.
That leads me into my second concern. We have an aging second year quarterback that needs to prove himself. I don't look at Weedon as the answer to Cleveland's quarterback problems, but more of a bridge to a young rookie quarterback that gets drafted in the next year or two. He needs to produce. He has no one to blame but himself if he fails to take command of the field and doesn't produce. His offensive line is pretty solid this year(maybe the strength of the team.) He has a healthy Trent Richardson this year and by all accounts is tearing up training camp. He has better targets at wide receiver. That is if Gordon can lay off the weed enough to stay on the team(yes he was a risk, but I think it was one worth taking.) The addition of Devon Bess can only help the receivers. Oh and Weedon is going to be in the shotgun more instead of being force under center.
Some other concerns are what everyone worries about in training camp. Can everyone stay healthy? Ryan Miller (second team guy) went down in practice the other day. He was knocked unconscious for 5 minutes and taken by ambulance to the Cleveland Clinic. It ended up being a concussion, but the team asked the reporters to not include the players name in the initial injury report so the family could be notified first(which seems like they thought it was going to be much worse than what it ended up being.) Trent needs to stay healthy this year and produce more than just short touchdowns. He needs to break coverage and get down field more. I think his broken ribs stopped him from doing a lot of this last year, but we will see this year for sure. I personally wanted him when they picked him. I know this is a passing league right now, but I am not a finesse type of guy. When in doubt use a bigger hammer.
OK i am going to stop right here. I love to talk ask Guarantee. I have lost my voice in the real world for three days(I am losing my mind.) If it doesn't come back soon I am going to get a Stephen Hawking keyboard that speaks for me!
Side note, It is such a shame that some of the people I like on this forum are all Steelers fans. :devilhead
Will be my first trip to both Dublin/London, will be a good NFL match up of old-school teams and the icing on the cake will be some good cigar shops. 
