I agree that it would be a lot more convenient to have them streamline normal crafting like they did with local leves, however you have to look at both sides of the story. When they implemented this for local leves they also lowered SP gain per synth. The reason why is obvious, they don't want us to level any faster than we already are. So a 10% cut in time needed per synth will more than likely equate to a 10% loss in SP per synth. You're still making the same amount of SP/hour, but you're using more mats in exchange for a more streamlined system. Personally, I'd prefer to get as much SP as possible per synth as opposed to being able to just spam enter and ONLY enter to burn through all of my mats.

This brings me to my next point. Another way to make it slightly more streamlined, yet still reward the same SP per synth is for them to make "Recipes" instead of "Requested Items" the default selection after each synth. This way you can still just spam enter, never having to look at your screen, and get the same SP per synth as we currently do.

Both of these options introduce a problem which you may have overlooked though. If we're allowed to simply keep spamming enter and ONLY enter then eventually everybody will just buy a cheap turbo controller and tape the confirm button down while they're away/sleeping. (Yea I know, it's no secret that plenty of people are already botting crafts anyways.) But, technically this does not violate the TOS because you wouldn't be using any 3rd party tools. So "everyone" would be cheating even tho according to the TOS they aren't and won't get punished for it.

I guess they can streamline it and default the yes/no to no though, but then we'll still lose SP per synth. Be careful what you ask for, you might just get it. Although, yes, your suggestion is a good one and I would be happy if the system wasn't as clunky as it is now. But on the other hand I don't think I would want farm/buy 10% more materials because of it.