Regarding Moulinet costs, specifically now vs SB.
Under this, with 30 moulinet mana, you could do 3 moulies in burst with 3 impacts.
This would change the combo from 1000 in 7.5 seconds, to 1350 in 12 seconds.
This gives us 333.3 PPGPT (potency per gcd per target) for the current combo, and 281.25 for your suggestion. The regular combo itself is 170 PPGPT, which means we're comparing 163.3 additional PPGPT over 7.5 seconds vs 111.25 additional over 12 seconds, or 490 extra potency vs 534. This -seems- like a gain at first glance.
However, that 490 is done faster, which means that you're back to your resource gain sooner. How much is 40 mana worth? 40 mana buys you 1.5 seconds of 200 potency, or, more accurately, 40 mana buys you additional potency over your combo for 1.5 seconds. But your combo generats mana, so... we need to figure this out algebraicly. Your combo does 340 PPT in 5 seconds, or 68 PPSPT. Ench Mou, on the other hand is 133.3 DPTPS. So, 40 mana buys you 1.5 seconds of 65.3 PPSPT; this basically comes out to a single point of mana = 2.45 Potency per Target in AoE.
Your normal AoE generates 13 mana in 5 seconds, or 2.6 mana per second, which normalizes to 6.37 damage per second per target.
So, we can add that onto the original combo's missing time to get a -real- value of its damage:
6.37*4.5=28.7 PPT.
That makes our final comparison of the two aoe schemes 518 vs 534 over the period of time of that AoE, or 16 potency per target.
Now, bear in mind what you're giving up for that: You can't use Ench Moulies between burst windows as often. (That includes the tactic of banking it, spending down to the comfy manafication number, then doing the biggest burst you can.) This reduces the value of mana in your bread and butter combo by 1/3. Each GCD provided aproximately 16 Potency per Cast in value from the mana gain, so reducing that by 1/3 means a loss of aproximately 5.3 effective potency per spell cast. This means that you've lost your 16 potency of AoE gains from your burst after only 3 casts.
This would mean that for AoE, your regime is a -BIG- nerf to RDM's AoE, all for the 'feeling' of doing more, to fix a problem that doesn't actually exist.
The trait you suggest, is not one I'd stick on Moulinet; it's one I'd put on Acceleration, so that it becomes a useful cooldown between bosses. But I think we both agree: RDM AoE is not at all a problem and people just need to actually just use it.