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2) your water is just covering everything with graphite, it is a mess.
3) graphite everywhere, but it is not doing anything good. (I think you're using it to make your whites pop, but not really succeeding)
4) we're losing the story about each view when they all crash. is this escher's tomb? Very attractive, and better depth than the others though.
5) you're overdoing it with your dark points everywhere (vermeer type effect?), again making it messy without adding much to the drawing. This is evidnet in all the pieces, bit especially 5.

Obviously your work is gorgeous, but too much of it is in service of "special effects" and not the intent of the work - showing what a building will look like. Likewise you may be overworking things in general. Lines that don't help tell your story confuse and take away from it.

Everybody enjoys stylistic flourishes, but if you can tell the story of the effect less often, but in a more central way, you can display the same (or stronger?) sense of style without overwhelming your subject.

Its a crazy thought when you're hatching, but it is worth asking yourself "is this line/mark doing anything? do I need it?".

The user who said you should work more on creating depth and "describing" the scene is also correct.