During the beta, Soton, certainly, they have plenty of things to fix an a pair of charismatic players, seems great for a mid-term save.
Later on, most probably Vaduz (only with Liechtenstenians and U17 players that could be selected by the national team after a few years; this is my current save and it still gots me hooked in 2027), but it could be also a similar challenge in Denmark with a Feroese fantasy team (and Feroeses players exclusively, of course), or any other alike that comes to my mind (maybe a Brixton team in PL with Jamaicans only ).
Finally, a save with my custom Galician football DB.