Lately I have been reading a lot of the wiki and the forums.  Mainly the skills and how they relate to each other, mainly towards Tinkering and Taming.
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[/size]Two skills I found had limited usage for an Adventuring Tinker, but they could be of use to others depending on their skills and abilities.
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[/size]Forensic Evaluation- Lets you look at a dead body, and determine some information about who has interacted with it.  I think this skill could have other uses, such as hiding evidence of a criminals activities within the game, perhaps lessening the effect of their action by reducing their timer for doing something to someone else in Fel. 

• [/size]At higher levels (130+), perhaps it could be used to place a false clue pointing at someone else near by instead. 
• [/size]It could tie into stealing by helping to hide the results of the action by placing a fake item in place of something they have stolen.
• [/size]Allowing an extremely high level (160+) to poison or degrade another player's food or potions.

• [/size]When a player is killed by another it could lessen the time they have a murder count for, or at extremely high levels (140+) give a small chance to not receive a murder count as they were able to hide the evidence that it was them.

• [/size]Perhaps add the effect of increasing a potions effects, as the player would know the properties even better, partnering it with Alchemy.
• [/size]Making it the controlling factor, same as Animal Lore, for controlling a Golem or clockwork pets.
• [/size]Allowing a Tinker with high level skill in Tinkering (100+) tame various Golems or clockwork creatures. (Tinker Dungeon, Survailance Drone not included).
• [/size]Allowing a Tinker to increase the amount of repairs done to a construct.  Using its value as the Healing skill for creatures of this type.