I think Rimuru should speak up more. His face is plastered everywhere it's only a matter of time people will start to worship him. He seems to be incapable of telling his subordinates no at times. Worship the very ground he walks on. Rimuru does not seem all that religious yet he keeps bringing religious themes just because he had memories ringing a bell. His shortsightedness was on full display when he asked who they were praying to!?!