As someone who is horrible at managing all those experiments while in flight, and actually pretty bad at the game in general, it would be nice if there were some science experiments that you could just slap to a probe, or a manned station and have continuesly generate science without the diminishing returns. Now I am not saying it should be a good income, it just needs to be a stable one. like say putting said probe on a low orbit around Kerbin yielding a very slow 0.1 science per ingame day, and putting one just outside the orbit of Jool generating considderably more per day.(but still a slow rate compared to actuall missions) Just something slow and steady, that still rewards more difficult missions. Because I am certain that otherwise I'll get horribly stuck in the tech tree.(what can I say I need my techs)