If 052Es are to be given more VLS when compared to 052D, their hull dimensions would have to be expanded.
For comparison,
052D: 155m length x 17m beam x ~6m draft (64 VLS)
052DL: 161m length x 17m beam x ~6m draft (64 VLS)
055: 180m length x 20m x ~6.6m draft (112 VLS)
Arleigh Burke: 155m length x 20m beam x 9.3m draft (96 VLS)
Sejong the Great: 166m length x 21.4m beam x 6.3m draft (80 VLS + 48 K-VLS)
Maya: 170m length x 22.2m beam x 13m draft x ~7m draft (96 VLS)
I am always an advocate for more VLS for the 052Ds, since they are designed and built with the major goal of facing off against the "Pacific Heavyweights", i.e. Arleigh Burkes, Mayas and Sejongs. China is practically on her own and surrounded by three powerful navies.
However, instead of pursuing the "fitting as many VLS into one big hull as possible", I suppose it would be better for China to increase her VLS cell count on 052E to just 80. Perhaps it would be much more important for China to be able to print out as many 052E hulls with better radar+sensor+fire control systems, flexibility and survivability as possible.
More automation on 052E should also be pursued (just take Mogami FFGs for reference), in order for available PLAN manpower to be spread across more ships + reducing potential manpower and firepower losses in case any warships got sunk during wartime.