@jeff_rivers is correct.
All of the programs you mention can be useful with Civil 3D.
In addition vehicle tracking is good for parking lots and is only available as a part of the AEC Collection.
Raster design may be useful as well.
Home if you want to work with point clouds, you will need to use Recap, because Autodesk has removed point cloud capabilities form Civil 3D.
*** Begin Rant ***
In my opinion, it is not prudent to for Civil 3D (C3D) users ignore Infraworks (WIX). Autodesk markets IWX as a planning tool good for about 30% design. A couple of years ago, an Autodesker told me it is not Civil 3D or Infraworks; it is Civil 3D and Infraworks. Autodesk appears to be investing heavily in IWK. C3D … … Not so much. My observations over the past few years lead me to believe that Autodesk's vision is Infraworks and Civil 3D.
Be defensive when considering Autodesk's offerings.
I will be switching from Civl 3D to the AEC Collection when my maintenace is up for renewal.
(If you are on a current maintainence plan look into the "switch" program. I do not know if it allows cross grading. It is complicated. Check with Autosesk and a reseller. If the answers do not match, check some more.)
I do not know how many seats of Civil 3D you are considering, but I suggest including at least one seat of AEC collection in the mix. You might want some seats of palin Aucad. The AEC Collection is licensed by user. If user A is assigned AEC he can use C3D and IWX and …; User B, who is assigned C3D can not use IWX, even if user A is not currently using it. It is complicated.
*** End Rant ***
You asked why you would need AutoCAD if you had C3D. You do not need AutoCAD, but there may be times you want ot use it. C3D files carry specific C3D information not in plain DWG files, and thus are larger. In addition, when opened in programs other than C3D, object enablers will be required.
Blocks and details can be created in AutoCAD because they do not use C3D capabilities.
Similarly Cover sheets and note sheets can be created in AutoCAD, by non C3d drafters.
Christopher Stevens
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