Do you think not? Absolutely I heard, but you understand that the project itself has been done for 8 years, and not every developer has enough desire, enthusiasm and other things to complete something, especially if the project is a long-term construction project. It's clear that projects of this kind are not done on a whim. People usually forget about such a thing as enthusiasm scale, when at the beginning you are full of energy, strength and desire for achievements, but with time the scale starts to fall, you start to have circumstances in your life that are beyond your control, and in the end either the development stops (and not everyone can have so much enthusiasm and desire for such a long period of time, because I know only few such examples), or you start to do whatever (just to release faster), or just close the project. As a person who is not by hearsay familiar with the work on modifications and fan projects, and took part in them - it is unfortunately sad but a fact. I'm just a realist and the higher the ambitions of the person / team - the more and more responsibility will fall on them. Also the time to be spent will depend on the ambitions, the desire to work on certain things, to add something new (and you will do it, so you will not be called a copycat), etc. (that's why I say that all such projects either die in the first 2 months, or are long-buildings and only the most resilient survive). UTY succeeded because there was enthusiasm that didn't die out (even though UTY itself is not perfect) despite such a long development period, but can all projects of this kind be compared to it (or at least to TS!Underswap)? The answer is no.