CT340: I drove by tonight on my way home from work and realized that there is one area where people can see the restaurants that this would block: The main entrance. I like your idea to move it to the side more and I am going for plan A. I hope I can just copy and paste what I have already drawn. The positive side is that the parking garage can be moved closer to ground level of the top of the hill and not obscure the view of the mall as much from the Aker's Mill/Cobb Parkway intersection. The buildings are thin enough they won't block much. Their view will also be better since they are higher up and their orientation will have a slightly more optimal view of downtown Atlanta since I'm turning them to an orientation better matching the Aberdeen in Vinings. That's also where the proposed BRT/LRT station is and it allows for underground walkways.
The downsides are:
The mall entrance will seem less urban in character again, but it will still be a marked improvement because it won't feel quite as wide open.
The front entrances of each complex don't line up anymore. Oh well, everyone will survive.
It is farther away from the Galleria pedestrian bridge and will be harder to capture convention pedestrian traffic. I'll see what I can figure out about that. I'm thinking that the biggest problem will be crossing the main entrance from Cobb Parkway to the mall. It can probably be solved by adding walkways on the other side of the Cumberland Mall Rd closer to the mall, which in my opinion should be there anyway (I always have to walk on the median when coming from the farthest parking lots and dodge cars as well when crossing Cumberland Mall Rd, grrr
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The LRT/BRT parking garage may need to be incorporated directly into the development and be part of Renaissance garage, state/county funded public parking. The closer proximity of the Spring tower garage to the mall would allow Renaissance Cumberland management to still make revenue. It can also probably be enlarged. I also realized that the valet cars from the Cumberland mall entrance can be placed in this garage instead of the middle of the parking lot where they currently are placed, freeing up some additional mall parking in this very congested parking lot.
The LRT/BRT station will need to be moved underground, which is expensive but good use of land. Also, I like your tunnel idea. If LRT/BRT is tunneled from the other side of Cobb Parkway, then that tunnel can also be used to get pedestrians across the ridiculously unwalkable Cobb Parkway where they are too far South to use the Galleria pedestrian bridge.
It does solve some of the issues about having a direct view of the Galleria and Cumberland mall roof. The roundabout also goes away, thus saving money. I will leave the pedestrian bridge between Spring and Renaissance garages so the development isn't a barrier to walkability, however I will shorten the main pedestrian bridge and remove the public access part.
It also provides more above-ground public parking for the shops on the 1st level.