K2/Nintex BPM expression editor a "beauty" compared to Appian expression editor

Coming from K2/Nintex BPM where the expression editor was a beauty (nothing to memorize, functions based on category, drag and drop a function, etc) I find this Appian expression editor a huge pain.

Maybe I'm wrong and I missed something? How can I absorb things faster without to memorize things?

Are there any plans to re-write this expression editor?

Thank you.

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