As the person who championed this change and articulated it during closed beta - I can say it is the full "skill value" - not "skill ranks". I actually pushed forward this change and was satisfied when it was clarified (or so I thought). Here was my reasoning:
a) Your skill is not just how well you're trained in something. Your inherent ability (Characteristic DM) and augmentations (Skill wire, bio-augments, etc) and situational modifiers are all key factors in how well you do something. This applies to both offensive (Gunnery) and defensive (Piloting) skills. Doesn't make any sense to have Dex apply to Gunnery but not Piloting.
b) Consistency and Balance. As per the above, it is generally a bad design approach to have character aspects unevenly affect both sides of a balancing equation. Some games handle this by having opposed rolls (but that is time consuming), and the aim with many newer games (like MGT2E) is to build in that "opposition" into the single roll. Therefore, the full skill value (all modifiers) apply.
c) RPGs generally do not go out of their way to tell you explicitly all mods that apply/dont apply. For example, when describing an attack roll, Mongoose does not indicate Characteristic DM + Skill Rank + Situational modifiers + Skillwire/other augmentation bonus. When RPGs do this, it is an exception (see below).
d) General Balance and MGT1E problems - too much of a focus on always hitting diminishes the value of player skill/tactics if the dice dont back up your skill/actions. If we underplay defense, it becomes optimal to just completely ignore it because "you'll simply hit anyways". This was really pronounced in MGT1 and really removed an entire dimension (the ability to avoid fire) from the game. It was just bang away at each others' hull and armour.
e)
EVASION, Page 160: "The attack suffers a negative DM equal to the pilots skill."
Versus
DODGING, Page 72: A Traveller who is dodging will inflict a penalty equal to his DEX DM or Athletics (dexterity), whichever is higher, to his attacker’s attack roll.
Distinction between when skill "ranks" apply vs when the the overall skill applies.
Obviously, how you choose to play it is completely up to you and feel free to house rule it (one way or the other depending on your understanding). Just letting you know the mathematics and reasoning behind this change,the intended outcome, as well as the play-testing done was with the entire "skill modifiers" applying.
In conclusion - it can stay as is without having to delve too deeply into theory behind this. IF you choose to read it as just "skill ranks", be aware that it seems odd (and some players may raise an eyebrow) as to why your natural ability, Piloting Reflexes Augmentation (upcoming in Central Supply Catalogue), Dexterity Augmentation, and Skill Wire (Piloting/smallcraft) somehow has ZERO effect on my ability to evade fire with my craft...
Cheers
