Here are some of the improvements that have been frequently requested for HomeSite's ASP, ASP.Net and PHP support. To submit your own ideas, email me if you like, though the best way to be heard by Macromedia is to start an ASP thread in the HomeSite support forum -AND- to submit a note via the Macromedia Software Feature Request and Bug Report Form. These messages go directly to the development teams. ... better yet, fulfill some of these yourself and send me the info.
This should also work for dropping other executable files over a toolbar. If I drop PSP.EXE, it should help me set up a button to launch it as an application with paths already filled in, and even suggest using %CURRENT% in the command line. (thread)
Related to this is John's suggesion: "It would be useful to be able to edit HS extensions directly from the HS editor. IE I could write a JS or VBS file and have access to the HS application DOM via insight and I could also have a "Test" option to execute it directly and options to add it straight away to toolbars, menus etc. Right clicking a custom button already in a toolbar would also give me the option to edit it straight away." (thread)