Specific scenarios where Blackbaud DonorCentral is well suited are definitely in regards to our Development team. They can quickly update our constituent's memberships and keep our communications team in the loop on current member emails and those who are in need or renewals. It also helps with their development and fundraising events. They are keeping track of the highest donors and those big prospective donors for future events. Scenarios, where it is less appropriate, are definitely in my meetings department. It does not sync with our registration database for conferences, so we have to do double work verifying if they are members or not.
It works okay if you have a large budget and don't have the technical experience on your staff to set up NSPS appropriately. It probably also works better as a purely development-driven database; trying to track multiple departments with very different goals in the same database is challenging.
I gave it a low rating because response times are slow. It does have multiple ways to reach support, but it usually takes a while before you "get in front" of the person you need to fix your issue. Also, problems seem to happen a lot, so it makes the process more frustrating.
Support for the product is horrible; often support will have you bouncing between Blackbaud support and Salesforce support and it's very rare either are able to find simple solutions. Most of the time the solutions almost always cost money and hiring consultants which, for a smaller organization, means not being able to achieve proper solutions.
I do not know of any other alternatives, as I do not work in the development department. Our Development team would have sourced alternatives to settle on this one.
I recently started using EveryAction, it is much more robust and nimble and does not need a lot of customization. The only big feature I miss is the acknowledgment process for Luminate CRM and Analytics: it was much more robust, but overall it doesn't have the cumbersomeness of Luminate CRM. I don't think I would ever switch back.