The one area where I think Ireland has failed (most obviously) as a GM is in addressing depth. He gets rid of decent players in exchange for what is at most a marginal upgrade. Considering that the previous players weren't always expensive, I think it has been a huge mistake not to keep them as depth.
I'm hoping that changes this year, but it will mean acquiring (and/or re-signing) a lot of players, because we're losing a good chunk in free agency. Look at running back: R&R are FAs and I can certainly understand not keeping them, although I'd personally like both to remain -- if only to piss off a few select posters on this board

. Both Hilliard and Cobbs are restricted FAs, so they have to be considered as well. IF Ireland (or whomever) chooses to let R&R go, I'm not going to be thrilled with just re-signing Hilliard and Cobbs. That would completely undermine our depth at running back. Unless we spend a first-day pick on a ready-to-go rookie or grab some SOLID talent elsewhere, we're just asking for trouble when injuries hit next season.
The same with our offensive line. It wasn't exactly great, but Ireland shouldn't repeat last year's mistake and let starters go in exchange for their equivalent (or marginal upgrade). Bring in new guys, by all means, but if e.g. Incognito and McQuistan (both FAs) leave for greener pastures, we need to bring in A LOT of new players. Neither player is terribly expensive, although possibly more so now than if they had been re-signed during the season, and would make for great depth.
I realize money matters, but we need to start getting rid of the worst players and signing good ones instead. If someone is grossly overpaid, sure, fire their ass (if they won't renegotiate), but the "horizontal switching" Ireland did last year screwed us when injuries piled up. Speaking of injured offensive linesmen, Nate Garner is a restricted FA and word is Cory Proctor was on a 1-year deal (and is thus a FA), but I've been unable to confirm it. Regardless, the O-line could see a mass exodus and although Long is the only great player on the line, that's a lot of holes to fill -- starters AND DEPTH.