With the recent update to CEs regarding being able to re-enter a CE if you die, we have seen that CEs are now lasting longer than what they did prior to this update, which is really good to see because it gives both sides a chance to showcase their skills.
However, the last thing any side would want is to be ejected from the CE in the midst of an intense battle.
That is why I am here to suggest to up the time limit of CEs to 15 minutes. Another extra 5 minutes may not seem a lot, but it'd just enough time to finish off those close encounters and to actually provide an outcome from the CE rather than being ejected from it.