Crap that was a typo. I meant to type 052E not 054E
I agree the 052D is showing it's age. It is quite thin with a beam of just 17m compared to AB/Type 26/Type 45 which are all over 20 meters
055 really feels like it would be too big to mass produce unlike the US's 80+ Arleigh Burkes
It has the DNA from the Type 052 Harbin and Qingdao, with the platform taking sharper focus on the 052B Guangzhou and Wuhan (what happened to 052A?)
The ship is maxed at this point. Lets not forget it is also cramped, with sensors, weapons and other equipment, the ship is armed to the gills. I would believe it if they say the ship is not comfortable on long journeys.
The only possible thing I can improve on the ship is to change the 2D Type 364 surface search radar on top to a 3D one, like the dual sided radar on the 075.
Arleigh Burke is also an aging platform. To be able to handle the power and cooling requirements of its AESAs, a good part of the hull has to be redesigned. Over the years it already has been subjected to many modifications. The USN has been planning for its replacement since the 2000s, but the Zumwalt story put a cork in that. The 80+ Arleigh Burkes started its first build in 1988 and was commissioned in 1991, the year the first 052 was launched. So the ship class has an enormous head start and it continues to be built because of the lack of a proper successor. If the Zumwalt was successful, the Burke would have stopped production some time ago.
055 ain't too big to mass produce. Chinese shipyards are constantly building ships with an empty weight well over 60,000 tons and can hold over 200,000 tons. Compared to the commercial produce, the 055 is tiny. What's expensive about the 055 is the systems, the electronics and weapons. But the country can more than afford to open the wallet for it, and this being on a state owned shipyard and everything being indigenous, spending is more like transferring money from one pocket to another. Its like you are paying yourself. The real bottleneck comes from training the people to run it.
In hindsight, what was done to make the 052 into the 052D took a lot of engineering guts. Pretty large AESAs there on a relatively small ship, on top of putting 64 VLS that certainly ain't small, probably the world's first CCL to reach operational service.