During Spiral Knights, it is often that someone invites me to a dungeon. But, the main problem with the invitation is that it doesn't inform me of where i'm going (gate and depth). Sure it would be wise to monitor where your friends are at to know where they might invite you to, but sometimes it is hard to keep track. Someone of a lower level may invite you to a non profitable level WASTING energy, and in the long run, crowns.
It would be great to use the same software that blocks expletives to replace /laugh emote with simply typing "lol". This would be a great feature
The invite issue isn't really worth changing IMO. When someone invites you, just hit hide and check your Social tab/menu/watchamacallit. There you can see which gate and depth they're on and determine whether or not you want to join.
Replacing the Laugh emote with just typing "lol" might cause some issues... If someone starts typing something like "lol that's awesome", the game will respond with "that's" as not being a valid target knight. If you want to have "/lol" added to do the same emote, sure, I guess that's fine. It just needs to have the "/" so it's still read as an emote and doesn't interfere with normal chat.