I haven't actually gotten to play these in net mode yet but they are all significant aesthetic improvements over the originals, and for the most part they seem to flow better than the originals too. I was pretty shocked by how radical some of the rearrangements were (especially "Dead Fields") but I can definitely get used to them. My only complaint is that it would be nice to have an add-on that can throw in HD textures for the M2 levels.
It would also be really cool to have someone redo "Aye Mak Sicur" as a net map in this style (it was originally built as a net map to begin with, after all), although that's probably a pipe dream.
Second Quest is a project designed to remake the original Infinity netmaps, as well as maps from other classic sources (Coriolis Loop and Marathon 2, currently). The end goal was to make them playable and enjoyable, and I believe we succeeded on all counts, with a total of 29 maps so far. It is a collaborative project, including efforts from myself (RyokoTK), screamingfool, Kinetic Turtle, Irons, and treellama.