I mean, I see the space behind the 57mm gun too, but I haven't read about LCS having a "fitted for but not with" idea for 16 VLS cells.
For instance,, Type 45 is widely known to have been fitted for but not with harpoons. I'm just wondering if you mean the same thing for LCS and 16 Mk-41 cells when you say "provision," or if you mean that it has the space for VLS but would require substantial structural modification to actually insert the capability in.
Regarding ESSM, I don't think it will be as simple as described -- I don't think the LCS's main radar is capable of terminal illumination. ESSM is a SARH missile, and I think it needs X band illuminators. LCS-2's sea giraffe radar and LCS-1's TRS-3D both operate in c band, I believe.
"Fitted for but not with." is admittedly not a good statement for the actual condition. That implies a lot of wiring and provisions that simply are not in place for the LCS...I retract that.
Best to say that there are indeed space provisions...and that is all.
The LCS does have a decent 3-D air search radar that could be used for acquisition, but terminal illuminators would have to be added...which could be done.
As it is, my own hope/wish for the overall LCS program has morphed into the following given the decision to stop the program at 32 vessels.
Jeff Head's Proposal for the LCS Program:
1) Cap it at no more than 28 vessels consisting of the following:
a) 12 Freedom class, all of which get a Mk-41 and sensor upgrade to make them multi-role in capability. All of them also get "up armored" to get them from their current Combat 1+ to the Combat 2 classification that the Perry's were designed for.
b) 16 Independence Class. All of those would get an Mk-41 with necessary sensors, but not the "up armor." All of them would also get a decent TAS and also carry the CMM module. They would be used for Counter Mine measures, ASW duties as needed, and SPecOps command missions. While conducting those missions, they are much more capable of defending themselves as well.
2) Build 28 of the new frigate-like combatant. Either an upgraded Freedom class as proposed by Lockheed, or, IMHO perhaps even better, the upgraded, frigate version of the National Defense cutter proposed by Huntington Ingalls. All of these would be designed and built from the outset to be multi-role and be the replacement for the Perry Class which is still needed.
Anyhow, that's my current hope for the program.