I'm surprised that there is not a single significant thread discussing mimblewimble in detail, or even a healthy debate going on.
Considering how this feature brings many functionalities that Bitcoin desires for a long time, I was hoping for a wider discussions going on the forum. Instead I just found a few one-page thread and a couple of press releases.
I'm also disappointed that the "scaling" issue gathers the majority of developer focus.
In any case, I think the XBT freight train has left the station and hard forks will not be possible from this point on. MW will have to be an alt coin (side chain, or whatever it's called), swappable with XBT via LN.
I think the key question is: does MW via XBT hardfork make XBT more valuable than XBT + atomic cross chain swaps + LN + etc.? I doubt it. A large, stable and reliable network is always worth more than a small network with more/better features.