first off: thanks. a very handy mod. I do have some small suggestions, even though I didnt read through the whole Thread. Shame on my if I repeat things. Since I use B9 Aerospace and NEAR some parts have different modules, making for some rather empty checklists. I have also merged the rocket and Plane Lists for Spaceplanes, since I havent been building anytihing BUT SSTO Planes in KSP For Controlsurfaces I added "FARControllableSurface" and for landing Gears "FSwheel". Im sure there are a million other Definitions to be had. Ill add them if / when I come across them. Now for Features i would suggest the already discussed (optional) List check before Launch. Also the Crew Assignment checker might stay Put the second time I press Launch IF I havent moved from the crew assignment page. (I probably havent forgotten if I already closed the Popup and havent navigated to another editor). Im havent looked into how saves and Mods play together or how other mods do persistence, but it would also be cool if the checklist type stuck with the vehicle when saving / loading. Also a long time from now in a release far far away you might split Lists into "Item definitions" and "List compilations". This would probably only help when you have a larger number of checklists since it would deduplicate the config file. If you would prefer an Issue on GitHub let me know. I felt like killing two birds with one (Forum Post shaped) Stone.