You seem fixated on the latter, to the extent that you will define away the quality measures of a market to get there.

The vampire/victim labelling you use is unreasonable. Market makers rest liquidity on the book and then other participants choose to interact with them. Both participants have chosen to enter the deal.

You propose a market without market makers. If you set up such a book, I expect you would find that nobody would want to trade there because they will get better prices and more liquidity elsewhere. If it was a good model, then all the exchanges would be doing it.

You misuse the term front-running here. Front running is when a broker has an order from a customer, and places orders on their own behalf before processing the customer order. In doing so they would put their own interest ahead of the customers. Rules about front running are a form of consumer protection. On-exchange market makers do not have customers, so the concept of front running is not relevant there.