The reason 8286 can only use his swep every so often is because it would be incredibly overpowered if he could kill 4 people in a row before being fear rp'ed. thats not how it's supposed to be played, players are supposed to be tactful when using that scp, choosing the right time to strike and take a new persons identity, trying to work their way up to HCMD/SF ranks. likewise, 682's charge swep has a cooldown because it would be incredibly op if he could be in a constant state of accelerated movement. these aren't QOL changes, they would fundamentally alter how people play those SCPs and would result in a change in how they are balanced with any other class on the server that has to deal with recontaining them. currently, they are already fairly balanced. 106 could use an update though i believe there is another suggestion that looks extremely promising regarding that one.
Edit, my dyslexic ass read this as a reduction of the timer not as putting a timer on the screen. Would be a nice QOL change +support