A provision in terms of space on the Independence class is what I am speaking of...and space only.
The compartment on the bow, aft of the 57mm gun is that space, and it was placed there specifically to allow an Mk-41 to be added.
They ended up not adding it as hey finalized the weapons fit.
Now, they would have to add the sensors for whatever they planned to shoot out of it. I imagine the ESSM could be accomplished fairly straight forwardly and with minimal costs because they do have air radar that would allow for the ESSM range. But the long range ASM is something that have no sensor suite capable of handling, and they would have to add something fairly significant in terms of acquisition and fire control.
But the space exists in the Independence class.
It is my understanding that there are space provisions on the Freedom class too...but it would involve some weather deck cutting to open up the deck space to access those spaces.
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. A quick google reveals nothing (although it does refer back to a few SDF posts made by you, Jeff lol)
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.
If an ARH variant of ESSM is developed, then refitting LCS with ESSM may be more realistic, as it won't need additional refit with terminal illuminators as well.