Regardless of what you choose, if limits are lifted and people run Core 30, let's say 5% of nodes run the latest version (you can fill up one block with one jpeg) they will relay that tx, and if it gets confirmed by a miner, your node will have it. That's what is meant by "we'll rape your node".
Just don't upgrade to the latest version, run 29.0.0 and set your own limits. Those who will run 30 are responsible for their choices and we can't do much about it except choosing not to run it. That's it.