Oxa I have considered it, and would still personally kind of like to have the option, especially since it allowed by Betfair and other API platforms have it. Of course I might just be fooling myself in to thinking that 100ms will make a difference. Currently I am set at 0.3 and MFP is a pretty lean mean machine .. the highest I have seen was 12-13 request per second with 4 markets (2 win + 2 place) running concurrently @0.3 refresh rate.
Having a V12 4L Turbo car might result in you going over the speed limit from time to time (never mind the petrol{bandwidth}), but it's a big advantage from a standing start kind of thing.