You have to recognize the unique aspects of the line if you want to enjoy it. The Elbing line is the closest we have to a sniper rifle/super accurate ship. Her Horizontal dispersion is nearly half of what a normal DD's is... which is extremely notable.
This is taken from Shiptool.st. The top line is a Z-52, the bottom is the Elbing. Both are ranged to 10km.
In terms of reticles, the Red/Orange would be the Z-52. The Blue/Light Blue would be the Elbing:
For a different comparison to more easily represent area which doesn't use ellipsoids:
Also, notice the Shell Flight Time. It's MUCH flatter/faster, especially out at range. Elbing can fire out to 17km with a 10 sec shell flight time. A Venezia makes that distance in 9.4 seconds.
Elbing on Top, Venezia underneathe:
Lastly, her AP has great damage and Improved Pen Angles, which can be remarkably nice.
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To play her is to use her range for constant pressure. She's akin to a Cruiser in that sense, but she has Smoke, no Citadel, and can have less detection than a Cruiser while trying to find positions to strike from.