... and everything need improve.
Define "improve" and you may end up with a decent argument that could convince people. Do I want to improve my car so that it can be a boat as well? Do I want to improve my house so it can be a shop as well?
In 1990, you only saw movies in Cinema. In 2005, in TV, Cinema, DVD, VCD. Why this? Because you have more options.
At the moment, I don't want to "improve" the chat client so that it can be a self-serving multi-media centre (I have other software that can assist that!).
Sure, you dont want. But a lot of ppl like webcam, sounds, etc, so why dont give him some options?
Somebody uses mIRC for 7 years and want to use webcam. So you will tell him to use MSN? Why not mIRC? Your IRClife will change if Khaled add webcam? Ignore it and dont use.
I think everybody would be very happy to see a program that wanna to improve and give more feature options and not saying: "use this other program.."