Cannot customize at time of posting; cannot add Twitter handle

Still looking for something that does what I want it to do, and this isn’t it.

A very basic feature here needs to be, of course, the ability to put a Twitter handle into a post. For example, HootSuite lets you post distinct content to each social network on a per-post basis. Even better, Buffer converts an @ Twitter handle into its full name for the Facebook version. This plug-in, even though it could have, does none of these things.

We should of course be able to have customization fields show up at the time of posting, as currently is the case with Jetpack’s Publicize feature. And yet, Publicize only lets you create a single post of text, lacking the ability to customize for Twitter vs. Facebook, etc.

Big problem for anyone who’s professional and serious about this stuff; and this plug-in doesn’t solve it.