Pots can be used in PvP frontline modes aswell. Atm 2400 equal to 5-7% of max hp of all classes in pvp. If they introduce new pots they would have to probably restrict them for PvP. Another issue may be that potd solo could be nerfed by that too, they would need a restriction that allows only lvl61-70 characters to use them. Another issue will be the cooldown, they seem to rise with better, higher tiers,but even longer cooldowns than now are not really welcome.