I'm not sure what you are asking what others have experienced?
However when I was using a different progesterone (Cyclogest) in the past, for 11 days monthly as part of my HRT cycle, I stopped getting a bleed - I think when I became post-meno - and the progesterone was clearly doing its job.
When you say you feel better on the progesterone days I presume you are experiencing the common progesterone withdrawal symptoms whebn you change back to oestrogen only, which is one of the main causes of pmt - but you are not getting the bleed. I can see why this must feel strange and you will attribute it to feeling better on the progesterone.
Do you feel OK once the progesterone has cleared from the system - say for the last week before starting the progesterone? You should do - as this is normally when women feel at their best during the natural menstrual cycle - although trying to artificially replicate it with HRT doesn't always produce the same results for lots of reasons!
If you do feel good during this last week (of oestrogen only) and your lining is thin then you could try reducing the time that you take the progesterone for eg to 10 days and see if you get a bleed that way.
Personally I wouldn't want to take progesterone all the time because of its depressive, sedative effect (after about 5 days it gives me a fuzzy head and sometimes a migraine) but if in your case, it doesn't appear to interefere with the beneficial effects of oestrogen, then why not give 100 mg a try? This is usually only prescribed when you are post-menopausal though. If not then taking 100 mg every day may well cause breakthrough bleeding or spotting if your cycle breaks through. However from what you say your cycle may well have stopped anyway - at least for the moment.
That's a bit of a wordy reply!
Hurdity x