It's a relatable motivation, but it's not a particularly deep one. Nor is it particularly novel. At its core, their motive is heavily linked to continuous sense deprivation, which...well suffice to say that it's not uncommon for people in real life to become depressed after losing any of their senses. And we certainly aren't lacking for precedence in fiction. As linked earlier in the thread, Metallo in Superman TAS similarly desperately wanted to feel again, as did Renard in the World is Not Enough (James Bond), Alphonse in FullMetal Alchemist, Lord Scourge in Star Wars: The Old Republic[footnote]Late conversation with Scourge: "I still remember the feel of sunlight on my skin, the scent of favorite foods, the color of my first love's eyes. To experience those simple pleasures again would be worth anything"[/footnote], Baldur in God of War...
It's a sympathetic and easily relatable motive, but it lacks the complexity and/or introspective quality required to be deep.