Now that IRIS support Python, UDL syntax should not be the only way with SQL DDL to define/create classes in IRIS.
Thank you for submitting the idea. The status has been changed to "Future consideration".
Could you expand, on what you want to see, and what it should look like?
There are already many different ways, to do it
Plain SQL, which can be executed with irissqlcli
DBT, more complex SQL with templates, and transformations
SQLAlchemy based applications
Choose any of these ways, all of them use Python to connect to IRIS