Personally, I think a better solution to this whole issue is to make a router table that can be readily attached or detached from one end of the MFT, older or newer versions. That way you are not compromising the MFT top and you get to use the table as designed while still being able to utilize it as a platform for a detachable RT. Just a homemade version of the CMS style attachment that we may or may not see here any time soon. This would not keep one from using a commercial lift or fence, or even a commercial top trimmed to an appropriate size for that matter. All one would need to do is fashion an attachment capability, support the table wherever they feel necessary to prevent sag, and fashion some struts to bear off the MFT legs. These could be hinged so that they don't stick out while the RT is stored out of the way. The supports under the table for preventing sag could even be part of the attachment structure and, if the surface height is co-planer with the MFT top it could be used as a table extension on those occasions that the MFT doesn't support your work as well as you would like.