U 're taking all upside down, friend:
FOR ME, the important is what can i have for a range of money. Nothing else.
Fisheye, extra super lens of future death... i don't give a damn...
I just want a super IQ and versability (hear normal condition, nothing fancy). Nothing else.
You're right and not 100% right.
larsbc had a good explanation on the matter of the merit of the fast speed lens of LX100.
Besides the consideration on: would you need the flexibility of a system camera, it seems you would also need to consider: would you need that fast speed?
If you always shoot in very dim light, the fast lens of LX100 of course helps in terms of higher shutter speed (more stable image) or less noise (lower ISO) comparing to the kit zoom 12-32 on a M43 camera. But, the latest generation of M43 cameras like GXs, EMs etc their noises in high ISO have been greatly improved. Like GX7 + non pro zooms (f/3.5~) I could comfortably (IMHO) shoot at ISO3200 under proper technique. One simple thing is the ISO3200 today is already miles ahead the noise level of ISO400 negative film! If I'm looking for something to replace my old film slrs, today a f/3.5 kit zoom could deliver better IQ that I originally looking for.
BTW, if you shoot in better lighting conditions, the benefit of a fast lenses is of course there still, but will even becoming not material anymore. You won't shoot f/1.7 + 1/4000" (except for the dof) under the sun....
For that reason, 12-35 f/2.8 once was high on my wishing list (attractive price recently) has completely replaced by the just announced 12-60 f/3.5-5.6(?) as "practical application of the focal length" would be more valuable to me than "faster speed". It is another reason I stay with 7-14 f/4 instead of upgrading to 7-14 f/2.8 as IMHO that faster speed doesn't good enough for the price difference (I think personally).
Speed should not be the only consideration. It also doesn't guarantee IQ. For the best value, we better take into account of many thing from would you need it, would you willingly pay for that premium etc.
As said, LX100 is best if you would need no more than its short zoom range, or you don't like lens changing (like me wife: so bought her a 14-140). End of the story.
For us who love photographing, lenses (different focal length) is what we are after. Camera body comes and goes (more pixel count, better sensor, more features etc) max <3~4 years. The lenses would be forever (in a sense). More application we do (macro, architecture, landscape, portrait, event, travelling, sports, BIF), the more different focal length of lenses we wish... If you wish to expand/enrich your photo life, you better look ahead on a bigger picture rather than today what you need.
You are the only one know exactly what you want.