Ribit - absolutley spot on question - and I believe it to be purely rhetorical (iotw: self-answering).
As I stated before, the courts, congress, and the potus ALL have routinely ignored the clear written meanings in the Constitution - and will continue to do so.
As I recently stated, this 'Balanced Budget Ammendment' idead is a really, really, really BAD idea - for the above reason - it makes no difference to the jackasses and assholes currently occupying our government (read 95% of all occupiers - both repub and dem ).
In light of that - your gut tells you two things:
#1.) Any 'new' ammendment(s) to the Constitution would suffer from the same 'ignoring' as the rest of the Constitution.
#2.) The potential for any NEW ammendments to bite us in the ass are HUGE.
Methinks that what you have outlined as a 'possiblity', Sire Ribit, goes far beyond being a 'probability' and ranks right up there with being:
1.) a foregone conclusion.
2.) an absolute certainty.
and lastly, but not leastly (sic) ....
3.) A "You better bet your sweet ass that will happen, baby."

Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good ...