"It does not have well-functioning and reliable file transfers."
I've never had a problem with DCC transfers, but I suspect I'm in the minority.
"It does not keep history of discussions."
Actually, there were several servers which had "MsgServ" bot which would remember your last logout time, and could go back to retrieve all those messages from its logs and auto-relayed them to you, all you did was ask it to replay missed content from x channel and you got it.
"It does not have media embedding."
If you used pIRCh98 as your client you had live video capability and could easily do a quick desktop share through OBS or similar software, but that did rely upon everyone using pIRCh98.
Slack is basically a modernized version of a mix of the best features that IRC clients and daemons and bot creators had.
The only thing slack hasn't seemed to copy yet from all the old IRC stuff is the ability to use mIRC as a desktop file system browser (that was fun to see being coded.)
I've never had a problem with DCC transfers, but I suspect I'm in the minority.
"It does not keep history of discussions."
Actually, there were several servers which had "MsgServ" bot which would remember your last logout time, and could go back to retrieve all those messages from its logs and auto-relayed them to you, all you did was ask it to replay missed content from x channel and you got it.
"It does not have media embedding."
If you used pIRCh98 as your client you had live video capability and could easily do a quick desktop share through OBS or similar software, but that did rely upon everyone using pIRCh98.
Slack is basically a modernized version of a mix of the best features that IRC clients and daemons and bot creators had.
The only thing slack hasn't seemed to copy yet from all the old IRC stuff is the ability to use mIRC as a desktop file system browser (that was fun to see being coded.)