A very large number of mIRC users use scripts of one form or another. Additional scripting options or improvements allows those who know how to script to make more/better scripts for the average user to use. That can offer more choices and features in the long run than a single additional feature.
All 3 options (video/voice/emoticons) are available through scripts, so it is possible to do everything with currently available scripts. Adding them to mIRC allows them to be more widely used, but it doesn't really add a new feature that isn't already used and available.
As I've said, if it's optional, I don't care about them being added. But, I'd rather see other things added that would be more useful.
