One of (imho) underrated features of AEM is the so-called landing pages/design importer. However, reading the AEM 6.5 documentation it is clear that the feature will be deprecated (if it is not considered such already).
Questions on my side:
Is there any alternative to this feature (without requiring building from scratch of course)?
If it's not to be deprecated, are there any plans to improve/build further and have AEMaaCS support?
From what I can check internally, this has been replaced by A default site template that is available out-of-the-box and that defines a theme for the Core Components and a set of corresponding templates that can be used to generate a new site from the Create Site Wizard. This default site template will also serve as a reference for further more use-case-specific site templates that web agencies can create with the Simplified Frontend Workflow.