I can easily identify by the lack of a blue user name that you aren't a mod so don't try to moderate. Just report this next time. You have gotten numerous warnings in the past and going forward will all be points instead of warnings. You've been told enough.
First off, do not sign your posts. We can easily identify you.
Secondly, you don't seem to have followed Cataclysm discussions as much as you mentioned. The FFB DoT doesn't get clipped any more (no DoT I've tested does) and haste and crit percentages in Cataclysm are supposed to be way lower than now, even in high tier raid gear (as a result of many changes). Getting the haste to permanently cap GCDs seems almost impossible (without buffs and set bonuses you don't even get close right now) so even if you're crit softcapped, you can still use mastery as a tertiary stat, so scaling is much less of an issue than it is now.
Reactive Barrier is one of those utility talents Blizzard wants. Obviously you can use it to survive when staying in fires, but it's much more useful as a live saver when you take damage unexpectedly. It also saves you valuable GCDs to spend on other things than casting IB.
Lastly, it's not hard to keep track of a few CDs and procs. Most rotations are becoming a bit more interactive to differentiate good players stronger from bad players.
I'm not going to comment on your suggested changes because they either have wrong assumptions or assumptions I simply don't agree with.