It drives me absolutely insane that people don't recognize how important a better offensive line is. Your player can have all the talent in the world, and if he's not LT2, he's going to get crushed behind a weak line.
The Redskins get a HUGE upgrade just with Jansen returning. Keep in mind that in Denver, Portis was predominantly a strong side rusher. I'd say yeah, a RT is pretty important when that's your favored side to rush to. Further, the Skins are in a much better situation at Center than they were at the start of last year.
To continue adding to what should already be an obvious point - the first half of the 04-05 year had Portis running high motion inside plays. The second half of the year Portis was very noticeably growing accustomed to those plays, and Gibbs was also becoming accustomed to Portis' slippery running style. It has also been stated REPEATEDLY that Gibbs was working on a new blocking scheme and new plays to accomodate for Portis' rushing style.
Also keep in mind that Brunell had no arm strength. Ramsey, although far from a great QB, has the ability to throw the ball deep - and with even faster receiving corps on the field, the D is going to have to give some respect to the deep throws or they'll be getting burned frequently... something no team had to worry about until Ramsey was shoved into the game. (Throwing to a receiver that was hurt the entire season, no less)
So answer this:
How could Portis NOT do better with two key improvements on the offensive line, a coach that's working WITH him to try and create more holes in the D, new plays that will take into account the running style that Portis is accustomed to, more experience with a Gibbs style offense, AND with more speed and deep threats on the field?
I may be a bit of a homer, but I'd think that unless you have blinders on, it should obvious that Portis has every opportunity to return to a 1500/10+ season once again this year.