Definitely has potential and i do wish you continue it, with you saying how its similar to tomodatchi really makes me wish there would be a bunch of random and/or weird tasks to complete for the surrogates ranging from buying them their favorite food, rubbing their belly to weirder/more random stuff like maybe going on a space adventure or wanting to do a "thing" with tentacles. Plus with you mentioning how there will be more surrogates i wish you could maybe have them interacting with each other in some way, either through text or little doodles depicting what they were doing together. There is a bunch of potential in it and i really wish to see said potential used.