Jarvie, this is a preprosal, not the official proposal.  The purpose of a pre-proposal is to get a rough the idea out.  Its just my opinion, but I think editing a preproposal is fair.  SPL has edited their own preproposals too in the past.

Remember that that the only vote that matters is the proposal itself which is unalterable.

But adding in a provision of how it will be implemented doesn't impact the gist of your proposal at all.

Of course this is my opinion, you and others may certainly disagree.