This would allow HoTs to continue to play a part in low damage phases and would synergies pre-HoTing/pre-Bubbling for high damage phases while keeping the strength (atleast in raw absorb potential) of PW:S
For example, Wind Lord Mel'jarak last phase 10 seconds before Rain of Blades; The Disc priest is having to move a lot and with a very spread out group he has to PW:S people in preparation, The Druid on the other hand needs to HoT everyone in preparation, with PW:S letting lets say 50% of the damage through, the HoTs will be able to start healing immediately while the absorbs are also doing their job.
My concerns so far are that it makes PW:S a bit weaker from a effective health POV when you have one big wack of damage coming in (e.g. Static Shock in Lei Shen encounter).
I also thought that if that was a problem then you could have Spirit Shell also modify PW:S to absorb 100% while active in addition to its current effects.
What do you guys think? Hopefully I haven't repeated someone elses idea.