Improve collection matching expressions
Currently, collection matching only supports simple equality for the 'any' option and inequality for the 'all' option.
I would like to be able match a collection against a set of values instead of testing a single match individually and then combining the results as shown below
$filter=tags/any(t: t eq 'x') and tags/any(t: t eq 'y')
Additionally, it would also be useful to have the capabilities to include simple boolean logic within the lambda to craft expressions that match a collection item against slightly more complex logic for example:
$filter=tags/any(t: t eq 'x' or t eq 'y')

Complex types is now generally available, which includes support for more complex lambda expressions.