Man, that is so selfish.
"The Ultraman franchise is potentially going down a direction I don't like, so I don't want us to have ANY ever again because of my close-minded views."
And sorry, but it already kinda was a toy commercial. The form changes in Tiga, Dyna, Cosmos? The multiple Ultramen in Gaia, Nexus, and Mebius? The multiple aircrafts and weapons that each earth defense team uses? Hell, the kaiju themselves are designed with toys in mind, something Toei has never gotten quite right. And if it wasn't advertising toys, it was advertising video games, like with Ultra Galaxy.
Sorry, but the toy companies pay the bills. As long as the toys are integrated naturally, I have no problem with it because it is a necessity in order for tokusatsu to survive. It's when they become obtrusive that things become a problem, but for me that's only been an issue on shows like Kamen Rider Drive and Zyuden Sentai Kyoryuger.
But if you don't like toys in your shows period? Tough luck, bud. This is the wrong genre for you.