I have to admit, while I love MLO in almost every way, this is one of the two showstoppers that means I mostly use ToDoIst now.
Actually, the two have opposite strengths. ToDoIst is *great* at getting tasks in. I can be anywhere in the app, hit "Q" and type "Bread #gro !!1 @tow 12p" and it'll add Bread to my Groceries project with the label "Town" and make it priority 1, meaning it's urgent, plus put it in my calendar for 12pm, which I can see in my iOS calendar. That project is also shared to me wife, so it'll pop up on her ToDoIst and joint calendar if she checks her phone while in the supermarket or at lunchtime while popping to the shops.
Or "Check if reclaimed doctor invoice @zJan !!3 #state 8p Fri @5m", which will add the Task "Check if reclaimed doctor invoice" to my #"Statements_admin" project with a label of "zJane" (which reminds me to ask my wife if she's done it next time i'm sat in some downtime with her), which will likely be 8pm Friday, so I time-block it in my calendar, but it's only P3, and it's also labelled as a @"5min_admin" task, which are the tasks I do when I have 5 mins of time at my laptop doing admin tasks.
Basically, the autocomplete of project names and labels is an absolute game changer. I can confidently throw in a few characters for key project and labels, while being in a completely unrelated context/place, and know the task will end up in the right places to action it when in that time/context.
MLO has a challenge from its strengths in that any task can be a folder, and it would be an overwhelming UX to autocomplete on EVERY task/project/folder in the hierarchy. I love MLO's hierarchy, and this is a downside of it, but ToDoIst's more constrained task structure is an advantage for it here in autocomplete. Also, the fact MLO is not cloud-native I think means it can't quite handle these atomic tasks independently in the same way.
So - I can throw tasks into ToDoIst in a few seconds, and be confident that they'll appear in the right place at the right time. In contrast, with MLOs' requirement for specific structure and tagging, I have no confidence I'll get it right, and can't use it.
HOWEVER - while ToDoIst is great at getting tasks in, it's less good at getting tasks out into actual actions. Since there's no strong task hierarchy, inheritance of contexts, location reminders for folders, etc etc. tasks can easily get lost when I'm in the context looking for my next action. This is where MLO really shines, and I miss it hugely.
Let alone all the amazing things with MLO that I miss, like goal-orientated GTD methodology support, task context/date/property inheritance, extremely focused views and workspaces, etc. I still try to use it for goal-orientated tasks, because it supports focus like nothing else./
D