On Live - the group-wide combat rez lockout resets in operations when you respawn. That allows for a single combat rez for most bosses, with occasional second uses in the longer fights.
On the PTS - since the personal ability cooldown timer for the combat rez does not reset on wipes, we will effectively still only be able to use an average of one combat rez per 5 minute interval. That means we will still only get an average of about 1 combat rez per fight. If a group is progging (shorter pulls), it will be even more problematic. Sure, you can rez two people in one pull, but then you are locked out of all combat rezzes for about 5 minutes (which can be more than one pull during prog). If your intent was to mitigate the loss of stealth rezzes by giving two usable combat rezzes, then I recommend either resetting the cooldowns between pulls, or addressing this issue some other way.
As a quality of life change - you should also do this with raid buffs like in other games. (IMO - Wiping on an Ops boss should reset the Raid Buff cooldown debuff).
As a secondary thought - these changes also remove the ability for stealth toons to reset their medpac for multiple uses. While it may have been unintentional for medpacs to reset, it has become a part of the classes' survivability. For something like an operative healer, who has experienced a trend of dwindling survivability, it is just another hit to the survivability toolkit during a time where sorc healers and merc healers have pretty much escaped unscathed.