Any way to support Time Estimates in calendar feeds?

It seems there is no way for me to create a task and have it show in my calendar feed as having a duration of anything other than "1 hour". I searched and saw a generic response about this "feature", but I was hoping I'd missed something.
I don't care if I'm supposed to make the due date the start time or the end time- I just need my tasks to show accurately on my calendar. Blocking out one hour for every task makes the calendar feed useless, which makes it harder to use RTM effectively to plan my day.
(staring at a spatial arrangement of appointments is much easier to grok than a list that, also for some reason, does not include time estimates...)
I don't care if I'm supposed to make the due date the start time or the end time- I just need my tasks to show accurately on my calendar. Blocking out one hour for every task makes the calendar feed useless, which makes it harder to use RTM effectively to plan my day.
(staring at a spatial arrangement of appointments is much easier to grok than a list that, also for some reason, does not include time estimates...)

Here are a few other related threads:
http://www.rememberthemilk.com/forums/ideas/803/
http://www.rememberthemilk.com/forums/help/1153/
http://www.rememberthemilk.com/forums/ideas/2039/
http://www.rememberthemilk.com/forums/help/2273/
http://www.rememberthemilk.com/forums/help/2655/
http://www.rememberthemilk.com/forums/help/3246/
http://www.rememberthemilk.com/forums/ideas/4418/
http://www.rememberthemilk.com/forums/ideas/5050/
http://www.rememberthemilk.com/forums/ideas/6841/
http://www.rememberthemilk.com/forums/ideas/803/
http://www.rememberthemilk.com/forums/help/1153/
http://www.rememberthemilk.com/forums/ideas/2039/
http://www.rememberthemilk.com/forums/help/2273/
http://www.rememberthemilk.com/forums/help/2655/
http://www.rememberthemilk.com/forums/help/3246/
http://www.rememberthemilk.com/forums/ideas/4418/
http://www.rememberthemilk.com/forums/ideas/5050/
http://www.rememberthemilk.com/forums/ideas/6841/
