Scattered thoughts:
1. There's no need to use the archaic wording of the US constitution.
2. Surely we can all agree that the SECRET RIGHTS clause is fundamentally pointless and there's no reason to include it.
3. Whatever our position on guns, like, I think, with capital punishment or abortion or anything like that, we should recognise that this is a game for debating political issues without any real world consequences, so we should try and have as many things to argue about as possible. Arbitrarily closing something off for debate (which, given how hard it is to change the constitution, this does) is a bad idea. And if we must have a clause allowing people to carry guns surely we can improve of the truly atrocious and utterly ambiguous wording of the Founding Fathers.
If it ain't broke, don't fix it!
Oh wait, it's broke...