General stationkeeping deltavee requirements?

I'm looking for general ways of calculating estimates of stationkeeping
deltavee requirements (e.g., m/(s y)) for satellites/stations in various
orbits (low, medium, high, and apostationary if relevnat) around
arbitrary bodies, and at each of the five Lagrange points between each
(sensible) combination of bodies.

Obviously this is something of a tall order, but for my purposes the
estimates need not be exact; within an order of magnitude or so is good
enough. I managed to find e-folding instability times for a few
specific situations, but obviously 1. that doesn't answer the question
generally and 2. there's more to stationkeeping than just pure e-folding
time; there's also perturbations for nearby objects.

Could someone suggest a relatively simple algorithm to compute such
things to some reasonable degree of accuracy for each of the scenarios
described above? Thanks.

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