I don't know how receptive you'll be to my suggestions, but eh, it was commented earlier that there weren't enough suggestions and solutions being banded around so eh, here goes <3
Simply put, my best DPS runs in dungeons have been with large pulls, it's as simple as that. I'm pretty much experiencing the opposite of what you're saying, if the tank pulls quickly and cleanly, that allows me to really go to town.
Eg:
(3.8k DPS on a 21 minute run) vs
(3.5k DPS on an 19 minute run)
The first link was with an excellent tank but the DPS wasn't really there at all (In fairness, the BLM also DC'd, so was better than their numbers might suggest). In the second link, the tank was solid but not doing nearly as pristine a job as the first group in stacking up pulls. So despite the DPS being roughly the same and the run actually being quicker due to no DC or such, my DPS actually suffered a little due to wasted potency on fluff pulls.
How do I do this? Probably the most immediate thing I'd suggest is that IMHO, stacking Thin Air and Lucid is the wrong way to go. Stagger them apart with the aim of having one for each pull to avoid the disastrous situation of running on fumes and having a minute to go on all your resource CDs. By comparison, by stacking both together, you're either using them significantly later than you could be, or you're pressing them early and potentially wasting a bunch of Lucid ticks as you promptly hit full MP.
Secondly, have faith in the holy stun and get a good handle on how long that first stun takes to bite. Even if your tank is taking a hammering, holy is incredible CC and with particularly slow groups or poor tanks, that's the purpose I'll use it for rather than it's raw DPS. Throw that first Holy and use the window to get Aeros up if you think you're not going to be able to DPS much more.
Third, don't be afraid to play it safe, but don't feel playing it safe means that you can't DPS.
https://www.youtube.com/watch?v=fdU4tRrX984
I explained this a few pages back but just incase you missed it, that Benediction look's close @35 seconds right? Look closer, I could have Bene'd 10 seconds later and it would have been fine (If a little nerve wracking). I'm not a huge fan of swift casting the opening Holy if I can avoid it, rather I tend to open with a Cure II on big pulls to gauge the incoming damage and go from there. I always suggest it, but recording and watching back works wonders here for realising how much or little room you're actually leaving on the table without the pressure of the moment skewing your judgement.
As far as PoM on bosses goes, I will use it if it's up at the start of a boss, but if it pops later, I'll save it for the next trash pack.
In closing, even on wall to wall pulls, WHM DPS is incredible. I'm pretty confident that with the tank from the first run I linked and more typical DPS, I could have hit 4k DPS across the run (I was 4168 going into the Coeurlfist). Seeing how hard I can push myself is the main entertainment in roulettes for me. And unlike static raids, it's really not that big a drama when I step over the line.