David,
in a nutshell: with a HANA MDC instance all the workarounds which we needed to add for HCP before, are gone now!
So there is no pre-created schema for you anymore. You just create users and schemas yourself with names you define. (CREATE USER/SCHEMA SQL statements).
Also, for XS development the stored procedures for activating your applications are not there anymore. You just use the activation button. You can now pretty much follow all of the standard HANA tutorials without special alterations for HCP.
Some restrictions still apply regarding management of the whole MDC system, but within the tenant database created for you (your HANA MDC Trial instance) you can do pretty much anything...
Best regards,
Oliver