Because teleport potions exist, the purpose of televators are essentially worthless. It requires fuel from both ends, which is a massive inconvenience to the player, as they have to not only dig up the necessary amount of crystals to go up, but double their output just to go back down. This is all assuming that, there aren’t other players that will be using that Televator as well. If I went down to floor 60, and I want to go up, I would not only have to dig up the 30 crystals just to go back up, but another 60 crystals just to go back down. Meanwhile, I can conveniently chug a teleport potion and waive the 30 crystals to go back up in the first place, but then I’d still need 60 crystals to go back down.
It simply isn’t worth the time, effort, or the backpack space required to efficiently use the Televator. I think the feature should be looked at and reworked a bit more so that it’s a bit more convenient on the single player as opposed to a community project.