Tags inside Property Value
I think it would be a very useful feature if a datatype "wiki markup" would be available. Even if there would be some restrictions e.g. limiting the markup to non semanti-mediawiki content and maybe having to encode special characters like | and {{. Even if this kind of attribute would be non -queryable it would be o.k. as long as the bindings to the parent object parent page would be available. This way wiki markup/tags could be transported within semantic content and their would be many usecases for this.
MediaWiki generally encodes content for any <tag>
notation [0] which makes fetching the plain value (when displayed by the browser) after it has been processed by MW rather complex [1].
[0] https://github.com/SemanticMediaWiki/SemanticMediaWiki/issues/232
[1] https://github.com/SemanticMediaWiki/SemanticMediaWiki/pull/794