We considered doing that as well. Unfortunately going down to 2.6.8 removes support for the following.
[Bitdefender] Bitdefender Antivirus Plus (18.x)
[Kaspersky Labs] Kaspersky Internet Security (15.x)
[Symantec Corp.] Norton Security with Backup (22.x)
[Agnitum Ltd.] Outpost Antivirus Pro (9.x)
[Panda Software] Panda Cloud Antivirus (3.x)
[Intego] VirusBarrier (10.8.x)