u can't stop hacking unless it was made harder for cheatengine users and other programs to tele and stuff. it might not be different for the people playing the game but, for QRious it would be time consuming to change it and would made updating things different.
If Usernames are added then rooms can be saved under the user so only the user can see it, meaning you can block it to the public till your finished or have it be a private room. The names of people in the room can be in a box which can be hide and the same with chat.
here is some advise, never have to many bugs, it's better to sell any repeat gender of the same bug, and then sell the bugs at the bottom of the pyramid when there is no need to have it. If you need the bug again, u can usually buy it again. great game through 5/5