So, some of the stuff I've read here and have been thinking about reminds me a bit of Shadowrun with the Stim chips and simulated virtual reality chips that people could buy, plug in and then experience the life of someone else. These typically could not override the memories of the user, but depending on the nature of the chip, the user could become addicted to the sensations created by the stimuli.
As for memory wipes/deletes/modifications...I think that could be a possibility in EVE, however the reason I don't think it is common place or has much chance of working is due to the nature of the technology involved. If we stripped everything down to just data and forget all the other stuff for a moment, one of the reasons I think clone tech is beyond most baseliners isn't necessarily the process itself, but the installed hardware firewalls and shielding devices in the capsuleer implants to prevent someone from wiping the hard drive as it were. I would be of the opinion that the hardware would have to be hardened against the feedback that we get when in the pod and therefore would prevent just about any attempt to memory mod/wipe a target.
Not saying that it isn't possible, just highly improbable. If someone wants to come up with a story/character concept where their memory gets stolen, fiddled with, I'm cool with that, just so long as some thought is put into it. It doesn't have to be 'realistic' to convince me, just something more than "just cuz".
One thing that I've had an issue with is the supposed physical frailty of the clones. Yes, we don't need to be super-soldiers, but I don't buy the "will likely die if they catch cold cause of sterile environments"...the moment you step out of the tube to get into the pod, you'll likely have contracted any number of nasty bacterial or viral agents. If cloning is supposed to be an expensive process, I want that money I'm spending on clones to include one hell of a immune system. Also, assuming nothing really funky, unless they are basing your clones off of genetic material taken whilst you were still in the womb, the genetic building blocks they are working with are going to include things like your basic immune systems..I think (I could be wrong on this part, but I see that as being part of one's genes).
Fortunately, the whole clone/jumpclone/softclone/hardclone/sheepclone has never really been an issue in the RP I've had in EVE.