It's not the current issues which concern me, rather future planning - or shortfalls in such planning.
The carriers alone may appear substantial, but they require significant assets to run as I mentioned.
To protect the carriers adequately against a mid to high nation state (not fighting Al-Qaeda etc) would bring large risks. This brings costs.
With increasing submarine and aerial capabilities of nations, aircraft carriers are viewed by many in naval forces as increasingly vulnerable.
While they offer great flexibility, they are extremely costly to maintain, operate and defend as a whole. This includes technological development.
Although of much greater quality, would we risk quantities of our decreasing number of GDMs (namely Type 45) to act as the required shield?
The new Type 26 frigate will not be completely in service till late 2030s, and will be expected in ever decreasing numbers.
Add to the requirement for increasing the current quota of aircraft (and their costs) which each craft will carry, without adding NATO allies aircraft.
So, to adequately protect a carrier against a significant threat would require between three and five vessels, excluding support ships or subs.
That's a fairly high percentage of our naval assets when you consider current ships on the role. Will a government be willing to risk this?
Added all together it makes their potential use in a full combat role for sustained durations as pretty limited.
They'll obviously sail around the globe 'displaying' their power, but they will very rarely close to capability and not for extended periods.
To be a top tier nation, you need the potential for sustained combat capability. We cannot offer that and I doubt we will in the future.
Do not get me wrong, it will be fantastic to have them in our navy. However, do not overstate their long-term capability.
You mention the Falklands as an example. We barely had the capability back in 1982 to undertake such an operation.
Now? Pretty much impossible, although the Argentinian capabilities are even worse so that threat has receded.