I'm in NYC; there are loads of AMPs and hundreds or thousands of providers, but the routine is pretty much always the same. And that's the great thing about these places-- they deliver on what you need. But the only variety, if you will, is that some providers will do videos and others do BBFS, which really isn't variety and to which I can say thank you, no.
But I've not seen any significant other variety, such as a real submissive you can tie up or a domme who will command her p be eaten; no role play (language problems), or fetishes. Has anyone looked for this kind of service or managed to get it through, perhaps, a cooperative MMS or provider? I suspect there's opportunity for an enterprising spa. Pstorefront type AMPs and not the condo/appartment based operations then might get more tracking on either the NY board on the MP board.
That said, I suspect that simply talking with the girl, but you'll probably need to do a repeat or two first, about some change up will likely get some results unless you're going really far afield. GIven I see a lot of ad posting with school girl outfits and French Maid outfite and Bunny outfits -- and also found those outfits on girls when the door opens -- I suspect you'll find such request accepted. You might also ask about stocking service -- and I've never looked into just what that is so may more of a take the escort outside things -- but I do see that listed as if it's something special.
I found one K-Girl in Silicon Valley who shyly brought out handcuffs on our second meeting. Turned out that (a) she meant to wear them rather than put them on me and (b) they were metal cuffs which I won't use for sex play. But I had velcro cuffs in my bag, and later bought her a full armbinder for our future sessions. She was delightfully submissive and active. She went back to Korea to run her family restaurant a while ago.
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Several K-Girls have offered vibrators for play; I don't know if that fits your kinks or not but I have great fun with them.