This seems to be an ongoing problem, throughout the NFL. Lots of disappointment in the level of play leading to very few consistently good teams, and then coaches/GMs getting replaced on a frequent basis. Perhaps the game is changing in ways that management is unaware of. I know that I find games themselves to be less interesting. Too many penalties, maybe too many rules, poor execution, inaccurate throws, missed assignments..
It seems as if there is an overall drop in the level of competence throughout the league that makes games more frustrating to watch and therefore less interesting. Maybe too much passing? Too many incomplete passes...boring.
The frustration expressed towards the Colts is nothing different than what's going on with the NFL in general...as far as the level of play....where I don't think a change of coach or "the next season" will have much impact. JMO