I'll try to sort thru some of this, hopefully correctly.
1. I cannot speak for what if anything DCJ is doing outside the US but inside the US they are installing (see
viewtopic.php?f=5&t=75879&p=845962&hilit=hitch#p845962) a Mopar hitch with receiver or inspecting the Mopar hitch you have.
2. it has been reported that the Mopar hitch being installed comes with papers that say it's not for towing but folks who have compared the original Mopar hitch and the current one say they look the same. The "not for towing" probably relates to a) the recall hitch does not come with wiring for trailer lights and brakes which makes towing not legal in many states but that wiring can be added and b) doesn't matter for the KJ CRD but on the gasser model if the vehicle does not have the OEM or aftermarket towing pkg (IIRC includes extra cooling for tranny and engine) then towing would be problematic even if you added wiring.
3. the hitch for the 05 and 06 model years is the same Mopar PN 52059224AC regardless of what UK dealers told lacabrera. I suspect but don't know that the hitch was the same from 02-04 also and probably 07, it would not be the same for 08+
4. in the US at least the only "legal" implication of refusing the recall is you cannot sue DCJ for any harm caused by that refusal; there is not "legal" requirement that you accept a recall on your personal vehicle although there might be some legal requirement that you inform any future owner that the recall was refused.
I've emailed lancer a copy of the US recall notice.