SET option command

It's currently possible to define options with the SQL command SET

ALTER SESSION SET `drill.exec.hashagg.fallback.enabled` = true;

But it's not possible to simply visualize the current value of one option with SHOW, we have to query like

SELECT * FROM sys.options WHERE `name` = 'drill.exec.hashagg.fallback.enabled';

Why not allow a simple

SET `drill.exec.hashagg.fallback.enabled`;