No Dieppe raid

What would've been the effects on WWII had Op JUBILEE not been undertaken on Lord Mountbatten's orders in Aug 1942 ? Would the same lessons learned OTL during the heavy losses sustained at Dieppe, such as the inadvisability of attempting to take a fortified port by storm, the essential need for specialised naval support craft and armoured vehicles, and precise combined arms co-operation, have been taken into account in the preparation for OVERLORD ? In other words, could the valuable but costly lessons learned from Dieppe, and translated into decisive Allied strategies such as the development of new landing and fire support craft, and the specialised 'funny' tanks of Gen Percy Hobart's 79th Armd Div, the organisation and implementation of a massive deception plan (FORTITUDE), and the establishment of alternative logistical measures, like PLUTO and the MULBERRIES, to taking a fortified port, still have somehow been acquired and put into practice by 1944 ? Or would such lessons for successful amphibious ops have had to be learned elsewhere, and if they hadn't, that plans for the invasion of France would've been substantially undermined ?

Also, what would've been the status of the 2nd Canadian Div without Dieppe ? OTL the Canucks were just rearing to go into action after being stationed in the UK for 2 yrs without seeing any action, and were so bored and disillusioned with inactivity that the Canadian army had probably the highest AWOL and drunk and disorderly record: 1 great joke made by Lord Haw-Haw in response to Canada's morale problem went along the lines of- how the Allies could win the war: give every Canadian a bottle of whisky and a motorbike, tell them Berlin was out of bounds, then they'd all be there within 48 hrs. Had the Canucks not been sent to assault Dieppe and suffer the crippling casualties that they did, how else could the 2nd Can Div have been used at that point of the war ?

The biggest question: what would have they have put the brave but incompetent for high command Dickie Mountbatten in charge of instead?

This has been discussed before at

"Alternative Dieppe:the poor Canuck sods hold on"
https://www.alternatehistory.com/discus/messages/4/727.html#POST4973

and "A Calais D Day: slaughter of the innocents?"
https://www.alternatehistory.com/discus/messages/4/2631.html#POST27295

where Mark Ford wrote:

"The attack on Dieppe wasn't an invasion. It was a large raid and nearly everything that could have gone wrong, did. If it had not failed, then the losses would have been lower, the troops would have embarked on the ships that dropped them off nine hours earlier. They would have returned to England claiming to have hummiliated Hitler. The commander, Mountbatten, would have been made supreme commander for the invasion of Western Europe and the invasion would have been attempted in 1943 instead of 1944. An earlier D-Day invasion would have failed and even more people would have cheared Mountbatten's death in 1979."

and I wrote:

"There was one general who would have been dumb enough: Mountbatten! He was uncle to Prince Charles and there is definitely a family similarity! If Dieppe had been a success, Mountbatten would have been put in charge of Overlord, & it would have been a wipe out! When the IRA blew him up in 1979, it is said that there was not much mourning in Canada! "My wife and I spent most of WW2 jumping in and out of other peoples beds!" (Lord Louis 1966)".