I have to disappoint you, but the Groovy based SmartApps are the past, as the whole Groovy code will be phased out sooner or later. (Phase 3)
You can build the same with Automations now in the app, and it will do the same. So, I wouldn’t have high hopes that this will be merged. (Look at that the last change on the SmartApp was before in 2018.)
Thanks for the heads-up about the new system.
Unfortunately, I chose the classic app as it is realatively easy to code for the amateur coder. Even after checking it a while ago I can’t see the new system fitting my needs.