It appears that the Halacha does not emphasize the importance of actually "sending" the Manos, they can be handed or eaten in place.
Moreover, the word לשלח is used in the Torah as "to expel", e.g. Adam was expelled from Eden or a divorced woman is "expelled" from her husband and its usage here is strange.
Why in the Meggila the action of giving out Manos is called specifically Mishloach - does it have to be far away, does it have to be by a messenger or else?
Of course, this question is based on the assumption that the Sages chose the words very carefully, and every word hints on specific applications.