Really surprised by all the people saying OL. The OL this year looks improved in the interior and lets not forget that the OL was horrific last season and the Hawks still won the SB.
My biggest concern is our corners with the new rules emphasis. If the regular season is anything like the preseason, then playing quality man coverage will be almost impossible, and Seattle's zone coverage is not all that great. Opposing QBs this preseason have carved Seattle up pretty good despite the fluky lack of scoring the last two games.
The good news is that the new environment has really helped Seattle's passing offense a ton. With Harvin on the field Wilson looks unstoppable. I guess my 2nd biggest concern is that a Harvin injury would be a huge blow to Seattle's offense, but in the new environment our little receivers benefit quite a bit from the lack of contact so it might not hamstring the offense as much as last year.