It would appear that the current ideas about hitting certain haste breakpoints and reforging the rest into other stats might not necessarily be the best idea based on some thoughts I had yesterday and this morning. I was in the process of writing up a post for the official forums about how to fix haste scaling in regards to HoTs when it dawned on me that possibly the mechanics that blizzard implemented to fix clipping DoTs being wasted dps were also applied to HoTs.

Testing this afternoon confirms that refreshing riptide between the 2nd to last and last hot tick increases the duration of the buff so no ticks are wasted.

The above testing was done with 916 haste and WoA totem down. As you can see from the combat log snipet that refreshing riptide between the last two ticks successfully extended the duration so the last tick was not wasted. This means that having haste levels above the 916 level and refreshing the duration of the riptide hot allows the hot to fully benefit from haste scaling between breakpoints. Haste continues to allow the hot to tick faster regardless of getting additional ticks or not and refreshing just allows us to continue on with that scaling with no net loss.

Since riptide is the only realistically controllable hot that has the next breakpoint within reach and everyone can agree that haste benefits throughput past certain breakpoints, this just further proves that haste benefits hot throughput with no loss in ticks (in the case of riptide at least).

You would just need to figure the time between ticks for your haste level and refresh riptide when the HoT has a duration of less than that. In the case of Riptide, the time between ticks for 916 haste level (8 ticks) is 2.8 seconds and between 2005 haste (9 Ticks) is 2.471 seconds. Very useful if you are rolling riptides on tanks and using that to bounce CH's off with T12 4 piece set bonus.

All that said it seems to me that we can focus less on reforging gear to hit exact breakpoint figures and focus more on exactly what we need to be a more effective healer. A good balance of all three stats might end up being best instead of stacking one or the other.

Haste: Pretty much a full throughput stat with the added regen of faster LB for telluric currents
Crit: Throughput stat as well as regen stat
Mastery: Throughput stat that performs better when raid health is low

Actually that is my point, you are not benefiting from haste hot ticks at 916 past 260 haste rating breakpoint unless you refresh it. Since just about everyone reaches the 916 breakpoint level, casting riptide between the 2nd to last and last tick means we fully benefit from the additional haste. Obviously the time between ticks at 916 isn't the 2.8 seconds I stated but you can see the point I was making.

Here are two questions:
First, I've noticed trough the wandering on Resto Shams topics that nobody talks about macros. I myself dont use a single, but was hoping to find something that could match my playstile. Maybe a macro mouseover for LB would work, I dont know.

Also, I would state that TC is working pretty nicely for me. I rarely fall bellow 80k Mana on Heroics (specially timed ZA's with the need for Big Heals). Only some raid encounters make me feel needy for mana, if there is only another healer. Again, may be noted that casting LB while raid healing with Healing Rain keeps you mana full almost all the time on normal encounters.

The second question is a bug: I found in my Hex as Resto sometimes breaks out of nothing, with less than 20 sec duration. Is this happening to any of you? Its wierd because my ench's hex is working ok...

Tyvm for your care, GJ on researching more and more!
Dont worry, be happy!

Pretty simple answer there if you missed the changes in 4.2. (I'm assuming you did since it doesn't look like a shaman is your main) The modifier for critical heals on all classes was changed from 1.5 to 2. (when you crit with a healing spell is heals for 100% more, rather than 50%). They also revamped Imp Water Shield into Resurgence; which gives a good bit more mana back than the previous talent.

TL;DR 4.2 made crit a lot more attractive.