Well. yes exactly! SFW is DLL mod itself so it can't run other DLL type mod (like that CW co-op) together. It's possible to make some new version of SFW (as Zi has said 1 year ago) which would work with other DLL's so mods would be supported along with it - but it requires Zi's time actions on that. I don't think it's important thing to do now since we don't have many dll mods to run with it. And players who would work hard to download and install mods - for most it's so hard you can't imagine :)
And MapsExplorer mod is not using DLL cause it's based on lua, flowgraphs, objects, skins and xml files of Crysis - so this is why it works fine with SFW (I was testing latest version with Frankie one day during last summer) I just need to prepare installer for it to make it easier for lazy ones + refresh mapsexplorer.com website finally (which was dead for 2 years) I've alraedy made new version but of course I didn't have time to finish so - 3 months has gone and for next 4 weeks I have no time at all). Early 2016.
But anyway it's gonna be on-line for 5-10 years on 1-2 servers with 3-4 Huge maps (Parokour City, Steel Mill Open and 2 other - which I still have in plans. Almost the way it was with Steel Mill Open - 2 years ago. That time also only 6-7 visitors ever month - but at least it was still there, 24/7 - like virtual open-space waiting for lost but brave explorers from time to time ;). It was the idea of MapsExplorer project.
This time's going to be even easier to access thanks to our great autodownloader (any new version of maps - will update automatically) and mod installer. So give it some time. I will make it finall (a kind of) and take a break finally :) yeah it's gonna be borring there for most. But not for some :)