Okay, so I have narrowed down my options to two, but I need some help getting over the line:
AS Fortior and Madagascar
Heerenveen and Holland
Clearly two very different saves with different realistic goals.
Holland might seem like a strange choice for a Club and Country save as it could be too easy, but they are a nation in free-fall at the moment both in real life and in FM. I have never seen them even get to the latter stages of a competition and the domestic league always has it's best players pilfered and goes the same way as the national team. The goals are obvious, develop a league with plenty of potential into one of the best, while developing players good enough for a national team that should always be around the top of the world game, not languishing 20th+ in the world rankings.
Madagascar would be completely different - a bit longer term. Madagascar have never qualified for a World Cup or an African Cup of Nations, let alone got close to winning either. If we are honest, winning a world cup with Madagascar is an unrealistic expectation from a save - unless you are willing to pump 50 seasons into it. In the short term, the aim would be to win a game(!), medium term would be to qualify for an African Cup of Nations and long term would be to win one, whilst also qualifying for a World Cup. The league, as you can imagine, is poor, so developing that would be a necessity.
I am leaning more towards one than the other, but would be interested in hearing other people's thoughts. I am out all day today, so will be starting the save tomorrow.