Anime was bad, uncreative and low quality. I like how they animated the Great Sage, but they didn't do anything with it to cover info from the LN. They're just skimming through the manga, and missed many opportunities for 90s training montages of Slime becoming OP and building his town. They could have increased the pace and covered more with proper editing. But I'm not suprised they couldn't get the story board right as they can't even afford a decent key animator.
Also, did they skipped past the whole part where our good boy Slime learns the summon Lesser Demon skill and gets his guild id? Good luck season 2.
I am looking forward to vol 5 of the LN this April, which does a better job of showing Rimuru's real talent: meticulously building a fascist empire for the greater good of better cooking with a