There are many games with many different pvp modes(Capture the flag, zones, team deathmatch, whatever) recycled. The devs of those games recycle those game modes because 1. they are fun and 2. they work.

SE made the decision to create the medal system, to punish teams who get kills. And they reduced the skill gap with the with the press "9 buttons fast" system. In a fair match the team with the early lead will lose often at the end because of the 10-20% more damage incoming(which they didn't change since years, but it would have been necessary with the pvp revamp, it is 2 much).

So No, I dont trust them to create and optimize a newly invented pvp game mode like you propose. They take several months or up to a year to address minor changes in abilities.
People still don't understand the medal system in feast, it is to complicated for the majority or they don't care.