Improve REST API setup tool to show URL for Content REST API and not log stacktraces for 404s

I'm playing around with the 10.2 Content REST API by following the tutorial, and I ran into the following issue. The base URL (localhost:8080/site/api) returns a 404, see also the snippet of stacktrace below (full stacktrace is attached). Obviously I need to use the correct URL (localhost:8080/site/api/documents) as stated in the tutorial and documentation. However, the REST Services Setup Tool in Essentials (http://localhost:8080/essentials/#/tools/restServices) displays only the base URL, which leads to confusion. In my lack of expertise I copied this URL and tried it and saw a 404 and thought the API was broken. If I run into such an issue, changes are new devs will also do something similar.

I would like to recommend two ways for improving this. First, fix the 404, so that it returns something more sensible. And second, to show a notice in the REST Services Setup Tool about the base URL and the actual URL (with /documents added to the base URL).

Stacktrace:
[INFO] [talledLocalContainer] 23.02.2016 11:29:07 WARN http-nio-8080-exec-8 [JAXRSUtils.findTargetMethod:522] No operation matching request path "/site/api/" is found, Relative Path: /, HTTP Method: GET, ContentType: /, Accept: text/html,application/xhtml+xml,image/webp,application/xml;q=0.9,/;q=0.8,. Please enable FINE/TRACE log level for more details.

[INFO] [talledLocalContainer] 23.02.2016 11:29:07 WARN http-nio-8080-exec-8 [WebApplicationExceptionMapper.toResponse:72] javax.ws.rs.ClientErrorException: HTTP 404 Not Found