I think the map would reward rushing to the center and fortifying there too heavily, which means the game would start with a scramble to the top. Probably would come down mostly to luck which commander wins out.
The high ground is very stronk in Zero-K, so players who choose to stay down to take the mexes would probably not be able to climb later even with the metal superiority.
Battle Royale games tend to randomize the final location and not show it to players from the beginning precisely to reduce the effectiveness of strategies based around rushing the center and fortifying/bunkering down there, which would otherwise be very dominant.
I guess it could be interesting if the map was very large (so that lots of players could be far apart) and the slope sufficiently gentle as to not make fighting upwards inviable.