Lenglon, one of my spot-checkers has noticed that it looks like you have spent 5 stat points and 19 substat out of the 4 stat and 21 substat you were given. I double checked, and it looks like they were correct. Movement,Spirit, and Medical going to apprentice level each cost 1, but moving mind to basic costs 2.
Dev, looks like your sheet is fine. Ugh, The organization of the charsheet makes it a little harder for me to read than the original, even if, hopefully, it's easier for players to build with.
Pan, Yes, substat/skill points act as a level-up of the sub, from the level of the base stat. No, hte spent point in the main stat that doesn't raise it's level will have no effect. it'll still cost the normal amount of subpoints to boost the effect.
Xan the point distribution looks good, but the fact that you are able to get to exceptional in two subskills, and master in one whole stat (for the cost value of roughly five missions) is worrying. Having one exceptional or two master level substats would have been more to my liking.
To correct that, I'd either have to nerf the Lathal reward, or nerf the tier-up thus: basic->apprentice cost 2, app ->journey cost 4 journey to master 8, master to exceptional 16
thus, while low level characters would suffer a little, this would have the effect of slowing the rise at higher tiers a bit more.