i don't think this is a good idea sorry but i think it would cause problems for the site it would open up a whole mess of problems that shouldn't be open cause before you know it a debate can lead to an argument and that can lead to cussing and then people would have said things they shouldn't have and get kicked off.
No different than how things might go in Bible Study.
Adults need to discuss things, even things filled with emotion and passion, because they're important. If we never discuss them, no good will ever come. Fear of offending others and fear of disagreement stifle almost all productive and fruitful discussion in this day and age.
People must control themselves, the same as when Catholics and Protestants and Atheists clash in Bible Study... or if politics are discussed in any of the other rooms, as they are.
You can't run away from disagreements. If you're worried about a falling out... then address it prayerfully and with grace & humility. Include a brother or sister to help work it out. This is a part of life and part of being a Christian.
That being said... it's not a bad idea, but do we need an entire room? Might not random or something suffice when the urge grabs people?