I posted this idea in the IdeaStation and it hasn't received as much feedback as I hoped it would, so I'm posting a link to it here in hopes that more people will see it and provide feedback to the idea in the IdeaStation. I personally think parent-modifying components would have a big positive impact on how I use Inventor, and I think it could be a big selling-point for the software if it caught on. That said, if you have input on this idea, please visit the IdeaStation thread and provide some feedback.
Several responses posted, but basically... the tools you're asking for already exist. Bolted connection will do what you want with your bolt example, and for the olets... you (IMHO) should really be using routed systems, so many possibilities there.
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