There was a mod for IC2 which removed the loss chance from normal wrenches. Hasn't been updated in ages.
The losing stuff when you try to pick it up was implemented as a way to try and make people not move stuff around constantly. Meant to make players make a base.
It's also horrible. No one cares about the idea of staying in one place until you HAVE to move, because people care about aesthetics, and will want things to look nice. What if one accidentally placed a machine? Well, looks like you're building a base here, then, says the IC2 Devs.
Hell, they only added the Electric Wrench's lossless mod because people kept complaining about losing items from a stupid mechanic, items which might cost more then a nuclear reactor with six chambers, fully stocked with insanely expensive parts. So they added the ability to spend more EU to safely dismantle your workshops.
Thank Gog KingLemming made Omnitools. Now if only he could finish the combat upgrade for my wrench...