I think the idea of LCS was to have basically an empty ship that could contain plug and play mission modules for whatever mission was required (AMCM, special ops, etc). It would basically be an aviation capable ship. I think the idea was also to have a multi-mission capable platform which would preclude the Navy having to purchase/build single mission focused vessels.
The Navy has enjoyed some "LCS-type" conceptual and actual successes by using the leased "HSV 2."
I think the idea of an LCS works in theory and maybe even in practice, but money issues (credibility issues) have basically put it on hold.
I know what the theory is, but you could have a bit of extra space for the touted modules on a FFG, what the Netherlands has done, and accomplish the same thing.
Part of my worry is that the 'littorals' that we work in often have sophisticated threats that would easily overwhelm the LCS as currently armed. Just RAM's and a 57mm?! Even Hezbollah has ASCM's nowadays, and all you are going to rely on is a single, last-ditch weapons system? Talk about putting your eggs in one basket.
And what about working with a battle-group? Are we just going to be left with just Burke's and Tico's for the next 10 years? Every ship need not be an Aegis one.
To me, the LCS is a one-size-fits-all that will fit none of its assigned missions very well at all for a long time, at an expense the Navy can ill-afford to spend poorly.