<i>"I for one like the extra liquidity that IB provides. If I want out, they are there to take the other side of the trade. Who doesn't want that?"</i>
If you stop and think about it, that is actually a benefit to retail traders. Same as the big FX dealers and their trade desks. Shocking as this revelation may come, broker-dealers aren't gunning for our 5-lot / 10-lot positions. A big FX broker will not draw the GBPUSD down -30 pips out of its intended path just to take out somone's 10-lot on the other side of that trade for the spread. Such pervasive notions are totally ridiculous if not preposterous.
A good trader on the correct side of any market will be trading in harmony with the broker-dealer. The fact that some broker-dealers "play house" does not mean they watch every hand of cards flopped. It means they trade around the overall cumulative flow, nothing more. The individual trader's job is to be on the correct side of market flow, nothing else need be concerned with.