KUTGW - sounds fun :thup:
I really want either an Under-21, Under-19 or even a B/C Team job, just because it'll be a completely different type of job to standard club management. If you're a B/C Team Manager, your priority is not promotion, but staying up and ensuring that you blood through enough players that the A Team manager can have a reasonable idea of who is good. Personal success is surely measured in the amount of players you get through the system (and not freed) rather than league position.
Under-21 or -19 teams would be similar, but with the idea that you bring on players to the extent that they play for top level clubs instead of being released to lower league clubs. At my favourite team (English League One), there are a load of players there who've been given frees from Premiership clubs but who have been Under-19 or -21 internationals (captains in some cases)...
Now I know you can get these jobs, it makes me a happy man