IMovie for Iphone Several Questions

When I email or MMS video after editing through IMovie the quality is very poor. My friends that have the Iphone 3GS are having even more trouble viewing it, sometimes it says the video cant be played. I read that in order to get good quality you have to sync to your computer then send the edited video. Kind of defeats the purpose of a mobile version of Imovie.
Im not sure I understand the waste of time and money if you cant share a video in which people can clearly view your edits.
Question 1: Is there any way to email or mms a video from your iphone with better quality?
And, if not, is there any plan on fixing this problem?
Question 2: What is the approximate time limit on a video in order to email or mms? Why sometimes does it allow me to mms a video but when trying to email the same video from my iphone it says the video is too long?
Not really questions more so complaints:
1) You should be able to put a title on photos when editing through Imovie.
2) When adding a title to a clip, there should be an option on how long you want the title to stay on that clip. That way you dont have to edit down the clip.
iOS 4