I don't think it's all doom and gloom:
-- Westwood has the potential to be a very very good goalkeeper. He's not at Shay's level, but he will still be a very able replacement when the time comes.
-- Seamus Coleman could probably start for us right now, but it's understandable that Trap is cautious given the fact he's hardly had a run at senior club level (this isn't ignoring his LoI experience, not trying to offend anybody). So I think at right back we actually have a chance to improve when he eventually slots in.
-- I think Shane Duffy is gonna be the real deal at the back.
-- Stephen Ward is probably better than Kilbane at fullback, certainly not a significant downgrade. Greg Cunningham seems to be rated by both Trap and Mancini, so he could be a possible as well.
-- McCarthy has the potential to be one of Ireland's best ever players -- even if he doesn't reach those heights, he will most likely still be our best midfielder since Roy.
-- With Meyler, Wilson, Garvan and Gibson all floating around, I'd imagine at least one of them will give us a very good option.
-- Henderson at Arsenal and Clifford at Chelsea could be very good players for us if they continue to grow and improve.
-- Up front, Stokes has only just turned 22. I really think he will come good for us eventually. Leon Best is only 23, and is already a physical powerhouse. Even if he doesn't become an elite player, he could still be an effective player for us by battering defenses and opening up room for our other attackers.
Add in X factors like the possible return of wonderpants and someone like McGeady elevating his game and I think we're in a better state than a lot of people would think.
There are always late bloomers who come out of the woodwork as well: Kinsella for example was a very effective player for Ireland and only made his debut at 26 I believe, and Whelan and Lawrence are good examples of players making an impact for us in their mid twenties.