Tennessee Williams, Harold Prince and Arthur Miller, first and foremost.
Edward Albee and Ethel Merman, secondly.
Thomas Meehan, Jerry Herman and Stephen Schwartz, eventually.
If they ever name a theatre after Ethel Merman, it'd have to be a large house like the Broadway or Winter Garden. Naming a smaller house the Ethel Merman Theatre would be an insult.
"The Spectacle has, indeed, an emotional attraction of its own, but, of all the parts, it is the least artistic, and connected least with the art of poetry. For the power of Tragedy, we may be sure, is felt even apart from representation and actors. Besides, the production of spectacular effects depends more on the art of the stage machinist than on that of the poet."
--Aristotle