Your pre-defined list of states should default to the two letter state abbreviations, not the fully spelled out state name. Mailing systems use the two letter code. This is the third WA implementation I've done and each time I had to create my own list.
List of state codes is attached for your convenience.

Allow contacts to be searched by donation field/fund so that search may be saved in order to email donors on the status of the campaign.

Right now, the solution is to export the list, create a field in WA, add that field to the downloaded spreadsheet and populate it, upload the data, run the search, save it, then send the email. Each subsequent donor has to be added manually by populating that field in their profile or, if there are several, performing the entire download/upload/search process again.

With drop-down lists, users can choose from the list of choices presented but cannot write in an entry of their own. Please add the ability for a user to add a new entry to the list. For example, if a drop-down list in the field "Member Type" already has "Professor, Postdoc Fellow, Graduate Student, Senior Researcher, Lecturer" and the user doesn't see an appropriate choice, he/she can do an ad-hoc entry, say "Independent Researcher".

There should be an option at the contact level to ask for verification of the contact information every X days. Google does it. Yahoo does it. Facebook does it. When the user logs in the next time, it would take them to the contact information page and prompt them to "It has been a while since we've verified this information. Is this all still correct?"

Can we sort archived contacts by date archived. This will make compliance with GDPR much easier.

Allow a way to organize or filter saved searches including listing the last time it was run. Additional coolness would be to allow scheduling the saved search to email the results of the search.

There is a specific request for one additional field: https://forums.wildapricot.com/forums/308932-wishlist/suggestions/31910419-advanced-search-field-needed-latest-registration. However, admins should be able to use any of the internal fields, and not just the UI fields, as advanced search criteria. In our case, we need to build mailing lists of members with specific open balances, but {ContactBalanceAmount} is not available in Advanced Search. Furthermore, it would be nice to distinguish between members with open credit (payment) balances, those with open debit (invoice) balances and those with open net balances. Presumably, {ContactBalanceAmount} shows the open net balance.

Include suffix in the contact full name.

Want to ability to export the full list of errors after importing data so we could work with large number of errors easily

Currently all contacts are counted as the same (and part of billing), it would be nice to allow a W.A. customer to add Emergency contacts such as Electricity, Telephone, Water, Police, FireDept, Poison Control, etc as 'freebie' contacts since these do not actively participate in website and are solely used how to contact. For our small lake (125 members), we have 3 utilities and 7-8 Emergency contacts.

There you be the option for each common field in the contacts to allow edit only during the application.

Make the "add contact" form fields totally blank

Display more than 50 membership records per page for the main directory.

I would only allow guests to be entered in an event that are in the contact list

When I use run a saved search the results are listed below all the criteria for the search. This means there's a bunch of space taken up by the criteria and the list starts way off the page. But surely there is no need to see the criteria by default if the search is saved? Better to have a button to open up the criteria if needed, but otherwise just get the list with no criteria showing. Make sense?

Since the system generates a unique identifier for each contact, why does WA insist on also using email as a unique ID? Many couples share an EMail address.
You're better that this....

It would be helpful if I am automatically notified when someone makes a change to their information.

enable usernames. This would be helpful for an organization membership, otherwise people need to login with an email. As an administrator it would be nice to create an organization membership and assign a generic username/password for an organization to share with its members.