>Does anyone have a recommendation for the best set of generation rules or a set of house rules that fixes this?
Depends entirely on whether you are working with stuff that was generated with Book 6: Scouts and its variants in MT, etc. or whether you are generating new stellar data.
The simplest fix to the pre-1998 data is simply to take all 'DM' stars (e.g. M3 D) and change them to main sequence (thus M3 D becomes M3 V). Also, if you have any planets with atmosphere 4-9 orbiting a dim M main sequence star (M4 V through M9 V) cranking them up to M0 V through M3 V.
I can't comment on what MonTrav or other post-1998 Traveller systems might produce as I don't have access to that material. However, kicking the DM stars out and "adjusting the wattage" of M main sequence stars with nominally breathable atmospheres (Earth-like) is a good start to more realistic star systems without a degree in Astrophysics.
I did at one point create a somewhat more complex conversion system for stellar data (sans Greek letters and icky math), and I'll endeavor to dig it up.
Side note: Astronomy types are pretty much confirming that habitable planets could exist in close orbits around M-type main sequence stars, even if they are close enough to be tidally locked. The result would be a world some interesting weather patterns. Link: http://en.wikipedia.org/wiki/Habitability_of_red_dwarf_systems
Depends entirely on whether you are working with stuff that was generated with Book 6: Scouts and its variants in MT, etc. or whether you are generating new stellar data.
The simplest fix to the pre-1998 data is simply to take all 'DM' stars (e.g. M3 D) and change them to main sequence (thus M3 D becomes M3 V). Also, if you have any planets with atmosphere 4-9 orbiting a dim M main sequence star (M4 V through M9 V) cranking them up to M0 V through M3 V.
I can't comment on what MonTrav or other post-1998 Traveller systems might produce as I don't have access to that material. However, kicking the DM stars out and "adjusting the wattage" of M main sequence stars with nominally breathable atmospheres (Earth-like) is a good start to more realistic star systems without a degree in Astrophysics.
I did at one point create a somewhat more complex conversion system for stellar data (sans Greek letters and icky math), and I'll endeavor to dig it up.
Side note: Astronomy types are pretty much confirming that habitable planets could exist in close orbits around M-type main sequence stars, even if they are close enough to be tidally locked. The result would be a world some interesting weather patterns. Link: http://en.wikipedia.org/wiki/Habitability_of_red_dwarf_systems