Glummy great news on the cycle! Supplements wise I took everything up until egg collection, except for DHEA which I stopped as soon as I started any IVF medications. I took a boatload of stuff for egg quality, as I think I've probably wanged on about on another thread 
I basically followed everything in 'It starts with the egg' (although I followed the DOR plan, and turned out post pregnancy my DOR had gone and I was PCO again, for which DHEA is very much contraindicated - although the 2 months of DHEA pre stims this cycle appeared not to have knackered my egg quality, given the PGS results). I took DHEA, ubiquinol, melatonin, high dose vitamin D, C and E, selenium, omega 3 plus my prenatal and folic acid (I take prescription strength because I have epilepsy). No idea if they made any difference whatsoever but made me feel like I was doing something proactive if nothing else. I didn't take aspirin whilst stimming, but as funkymonk says that can compromise egg quality, so would definitely check with your Dr.
Definitely doesn't sound like you have Ashermans with lining like that, you'd never get anywhere near that with adhesions. Terrific news!
Vitamins wise I've switched up my supplements for a FET to focus on lining rather than egg quality. I've dropped the ubiquinol, DHEA & melatonin and started L-arginine 6mg - which studies say plus high dose vitamin E can help the endometrium - but which the egg book says can be detrimental to egg quality. So wouldn't take in a fresh cycle to be on the safe side.
funkymonk thanks for setting up the thread - I shall mosey on over and get stuck in! I saw briefly that a lovely poster from another thread I'm on, who also has persistent thin lining issues, has joined - fab to have somewhere we can support each other and swap tips! And yes I thought I did recognise your username, I remember the vaginal viagra thread. Yes I got my BFP end of Jan, sadly discovered MMC in mid March at the 10w scan (had seen hb 9 days previously at 8+5, but baby only measured 9+3 so had died a few days later 
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Because this was always going to be a freeze all cycle so that we could do PGS, the focus was entirely on the eggs, and didn't need to worry about working on the lining for a fresh transfer. So didn't take anything for lining support - yet miraculously I grew that stonking 11mm lining all by myself!! Grew 3mm in 3 days so all the progynova during pregnancy appeared to have kicked my lining into gear
Dr was practically giddy with excitement, as said this would mean I'd have a proper period with lining entirely from my own natural oestrogen and progesterone - he said the body's natural oestrogen is superior to that given artificially. Before we started this cycle, in anticipation of having ongoing lining issues, we'd discussed the plan of action to work on the lining for a FET. He said he wanted to prepare my lining before we started a FET, as he didn't want to transfer until he was absolutely confident in the quality of the endometrium, as he said that was going to be the key to sustaining a pregnancy. He'd suggested a possible plan of doing a few more very gentle stims cycles - NOT for the purpose of collecting eggs (I'd be on a total unprotected sex ban to avoid any potential Octomom scenarios!), but to get my ovaries producing lots more natural oestrogen, so that the cumulative oestrogen exposure would hopefully continue to upregulate the oestrogen receptors in my endometrium. He said because natural oestrogen was superior, that would 'teach' my body more effectively for the long term than just putting me on an extended regime of cyclical progynova for 3 months (what Dr Sher suggests to prep non responsive lining)
Then when I grew all this lining we thought OK well we can skip all of that cos it knows what to do! Not sure what's going to happen now in terms of next steps, as we didn't anticipate me growing lining but not shedding it. Very very kind of you to offer re meds, may well PM you once I know whats happening, if that's OK? Really thoughtful of you 