The disappointing thing is some of this could have been addressed in the offseason, like a strong 4th outfielder, some solid bench pieces, and maybe some other BP arms with high upside.
I think rotating the DH spot is a bad idea as well, unless you have a really solid 4th outfielder or utility guy that can play all around. Putting Tapia in the lineup everyday and giving him AB's is always a huge negative. Josh Bell would be perfect, but even keeping a guy like Tellez around or going after another 1B/DH type guy this offseason wouldn't have hurt.