X-Wings in the EU always got the "they're new" kind of treatment, but I totally agree on Y-Wings... YW's were always a CW era ship that found its way, stripped to the bones, to the Alliance. While the cartoon tried to squeeze them into the CW, the films didn't, and I think Lucas **** the bed on that.
And the ARC-170 is anything but an X-WIng predecessor... Z-95's though? Again, another moment where Lucas could've given a fan wank with that ship, and to the EU, and to Ralph McQuarrie. They too may be sneaking into the CW series, but it's not the same as showing them in the PT...
INstead, 100% new designs like Jedi Fighters and the V-Wing. *shrugs*
Dusting off this thread just a bit...
I really agree with this as well. I'd really have like to see the ship designs from the CW era tie in A LOT closer with the OT. Don't get me wrong, for the most part they are all cool designs, I just don't find them particularly logical for the timeframe.
The Republic had been around for what 20000 years or so? That is a hell of a long time for a spacefaring culture to be around. At some point they had to have come to a technological plateau. I'd think that they'd likely keep the same designs for much longer than the 20 year gap between ROTS and Star Wars. Hell even between AOTC and ROTS ship designs change drastically. By today's standards we tend to keep fighter aircraft in service for 20-30 years at least. The F-16 was debuted in the late 70s and it is still in active service and production today. Considering how much technology has changed since the 1970s, that is really saying something about the longevity of our modern fighter aircraft. There is no way that in the Star Wars universe spacecraft would be phased out service faster than we phase out our fighters today.