I love the mod; have been missing these abilities since using a similar mod in minecraft ages ago, but I have two suggestions.
Ctrl-right click to place items also enables crawling but whenever I place something on a table I end up laying on the floor. Not sure what a fix could be unless shift-right click to enable crawling?
This mod disables copygirls StepUp mod which I rely on. Would it be possible to add the same ability to this mod?