This would take some time to implement, and while a decent suggestion, it's unlikely it will be implemented while there are alternatives and the developers are hard at work on content that needs to be released on a schedule.
Whenever you come across a player that is AFK'ing in a Battleground, screenshot the offending player, or the scoreboard if it shows sufficient proof of the player having AFK'ed in the Battleground. Upload the screenshot a site such as imgur, and wwrite up a small ticket with a link to the screenshot as proof of the player's offense.
Please note that AFK'ing in a battleground is by all means against the server's rules, and that the player will be marked with a warning if the GM who receives the ticket deems it necessary, which is likely.
Light bless!
noktynx wrote:The last thing the game needs is more pandering the crying children and the emotionally weak.
Noktynx, please don't complain about a valid suggestion, simply because you presume the poster to not be hardcore as yourself. The suggestion is valid and is worth giving consideration.