let me be honest, never put all of your eggs in one basket unless you already can build it yourself (including the subcomponent and critical technologies) just like what the Turk did with their MILGEM project right now. Indonesia and UK, historically had been engage in open conflict (and the generation soldier who fighting against them in Borneo and Malaya peninsula some of them still alive) so it would be never wise to sourcing all of our critical assets from them, unless we had short memory.
I know this analogy very well but does the remaining eggs ensure a survivability? Or let's say, how about the logistic troubles that may arise having 3 different classes with entirely different engines, sensors and even probably a weapon payload? Are they really eyeing a commonization among the orders? (That doesnt seem to be so)
Basket analogy works well for the airforce where you buy an asset and the maintenance cost is as much as the asset itselft for 1&2 years, but a naval force is constructed for once, usually remains in duty for 40 years with a single MLU and some minor updates.
Are they really planning a good basket analogy such that when one of the basket has fallen down the remaining can fulfill the hungry family?
Are they also considering some facts like AU? That a supplier from Europe maybe totally reluctant at a war in pacific or SEA and may not risk their personnel or shipments into the hot regions?
Too many questions, not for you since i know the answer of the most. Just to make people aware.
Nonetheless, it is a great effort to modernize a navy but there are lots to speak on that , such as not replacing the base of the fleet ie. The patrol ships, corvettes and light frigates upfront and then working on backbone large frigates to top it with advanced assets like Aaw destroyers and carriers.