If this project is dedicating also for electronic transactions that even low-end hardware can afford to be employed, then, users adoption is still very important for this project.
The longevity of this project still depends on the users that will continue to support this kind of system as well as shops or entities that might utilize their services.
The UI for their website is pretty simple and straightforward but I do hope they will improve their aesthetic appearance also.
Low-end hardwares or not, it does not matter. The matter is how to create and maintain good transaction speeds. I don't think that such things will depends totally on quality of hardwares. It is more depends on algorithm and difficulty adjustment algorithm. So, if developers can solve it, and control difficulty increases over time (not increasing too much), crypto currencies can be moved with low fees, and fast speeds; and transactions can be confirmed with low-quality hardwares.
