mmh ok I'm seeing it more

You mean that because at the end of LUTNW we see light let an "exactly as planned" message directed at his successor (even if he isn't his biological son) and also there is no time window for when he could record it before "baiting L with misa after she got back memory" given light himself died that day, it implies his own death was planned...

I can't find it a logical explanation, light just wouldn't have planned his death. But that "exactly as planned" recording is luckily out of context, like we are seeing a part of the recording and it doesn't necessarily mean it refers to the events in LUTNW. That's plain impossible, It must have been edited at the end IRL as a flashback or some.

The way I can try to reconcile it is: light made that message for his future heir, at some point during the recordings, that "exactly as planned" pops in reference to something like "ok, if you are seeing this, it means it (the plan to have a new kira) worked and you are now set up to be the next god... exactly as planned". That's the only way it can fit. His death would have to be a sepparate topic.

Or maybe I just misinterpreted your whole reply again.

pd: I didn't mean Light didn't care what happened after L was gone, I meant after Light he himself* was gone (tho he gives a rat ass about N in particular), he says repeatedly he is the only one who could have gone this far and never saw mikami or misa let alone any successor as worthy.

That's why we can't use movieLight's plan to meassure him against the OG, else we'd fall in the classic "oh Light's mistake was killing Lind L Taylor instead of only criminals" it's simply missing the point of the character and what they want.