Yeah, it is interesting to have different ways to boost your dude that have different trade-offs and effects. I see nothing wrong with how implants work, especially given how easy and cheap jump clones are now to get.
It could be done of course. But I think though the main reason not to implement this is the negative effect it would have on people who produce implants to sell on the market. It would devalue their work for a marginal effect.
Consumption is good for the economy. For that reason alone I don’t think we’ll ever see an implant extractor or a way to harvest implants from dead clones.