I would highly recommend giving games like Super Mario RPG and Paper Mario a chance, as it gives a lot of personality and character to not only Mario, Luigi, Peach, Bowser and Toad, but also of the worlds represented.
There is, a lot at stake; as it's been a landmark franchise for the gaming industry in general, and not to mention the popularity of Mario booming more with the rampid success of Odyssey, along with that 2020 is bringing Mario as one of the mascots of the Summer Olympics at Tokyo.
Mario, and his world; is iconic. Hell, I'd put it almost on a level of that he's Nintendo's Mickey Mouse. And considering that Nintendo has for years, kept to it as a very strict company on how IP's are used, stuff like Super Nintendo World, Mario + Rabbids, and especially the Illumination/Nintendo deal, is huge.