Hi Avalon85, I'm sorry to know you are faced with this decision, but you will have peace of mind from the hysterectomy given the hyperplasia is atypical.
My instincts are saying keep the ovaries
I think you're sensible to pay attention to them.
I had to have both ovaries removed postmenopause, several years before going on to have total hysterectomy (uterus & cervix). I started HRT 3 years postmenopause, a couple of years prior to BSO & symptoms were on the whole easier to manage with ovaries intact than since. That said, I do have other chronic conditions in the mix muddying the picture.
You've read up so you'll probably know that our ovaries are said to go on producing significant amounts of androgens for us well into old age, with widespread benefits for our systemic health & for that reason I'd say you're wise to think carefully about whether to retain them. Trying to compensate for this loss with supplemental testosterone has not been straightforward for me, with symptoms including systemic dryness, particularly pre-existing dry eye - now deemed severe - markedly worsening post-BSO. There is research suggesting that loss of androgens may be implicated in dry eye/Sjogren's & if you have not come across it I'd say it's worth looking into, as well as familiarising yourself with the other actions of endogenous androgens if you haven't already - GU health being considered another important area. Like you I have osteopenia & androgens are also thought to contribute to bone health.
Several of my friends have had hysterectomy without BSO & whether on HRT or not, they seem to have fared better in subsequent years than I have! On the whole I tend to agree with Hurdity & Joziel on this issue. It's not a simple decision though, as with BSO there is peace of mind in knowing you will not have to contend with future possible ovarian disease. I think Gnatty's point is also valid, as it's said that when left intact, ovarian function can decline after removal of the uterus, but to what degree & whether this always happens, I don't know.
I think I'd continue to read around as widely as you can from reliable sources if you feel there is more you could usefully learn & hopefully more members will come along with their experiences to help you decide.
W x
P.S. sorry, repeatedly edited as more & more came to mind! Will try to stop now!!