I don't really use either one of those. Once my images are ingested, I don't care about the log and I don't use multi-cameras, so that doesn't affect me either.
I'm finding I don't really use the Project/Client options either. I find it much easier to simply point the ingestion to a folder (I do use the preference sets to direct the download to the appropriate client 'type' folder, ie. Commercial, Portrait, etc.) and then use the Create Folder function to name the specific folder I want to download to. I find this much faster than opening the Client &/or Project tabs and creating a new client/project there.
For example. I have a standard set of folders that I create for every client (I simply copy this 'set' of folders from a template set). Within the client's named folder, ABC Corp. for example, I have the project number which is usually just the year/month as in '0611'. Within that, I have RAW, which is where I download my RAW images to; Processed, which is the processed RAW image, ready for sizing and usually in pdf; To Lab for prints; and Delivered for finished tifs or jpgs being delivered to the client.
Therefore, all my downloads are to the ClientName>YYMM>RAW folder. I just need to direct IIPro to the RAW folder and ingest. If it's not made up ahead of time, I just create them in the finder window. I use Preference Sets to determine which category folder to ingest to (as mentioned above) and to set my filename scheme for that particular type of work. If ImageIngester (not PRO) did this, I really wouldn't need the Pro version. All I need is Preference Sets, MetaData Templates and Filenameing schemes and the ability to direct the ingestion.
But that's just me.
I can see where the Client/Project/Card and other 'enhanced' features would be needed for others, especially with a DNG workflow.