do we have any revenue shares if ever for those tokens holders, even the smallest holders?
I doubt about it (I haven't found any statement related to it - or might I miss something).
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Not only that, but you can also enjoy discounts on master node or POS staking. Higher membership status also gives you an advantage of a higher number of orders/requests. Details are on the white paper on page 28.
Yeah, that was included on memberships type (as shown on the table - this is the 2nd time you remembered me about page 28, thanks). It's just giving different fees discount for PoS nor MN isn't offering a revenue sharing.
Page 29 might more relevant to the question, but it's just a short explanation related to PoS nor MN. I doubt for a small number of tokens. There should be a minimum number of tokens to keep.