Would you consider High Ground a "good" Ranked Slayer map? Because its weapon/powerup placements far favor the beach spawn than the base. It is worse than Powerhouse in that regard. High Ground's spawns were among the worst in the game - it would be the absolute worst if it wasn't for Narrows.
Beach spawn gets: Sniper, Ghost, Shotgun, Overshield
Base spawn gets: Spartan Laser, Ghost
Also beach spawn normally has easier access for Rocket Launcher, and quicker route to nab the Invis.
I s'pose I'm use to maps like Zanzibar and Burial Mounds which, in my view, had excellent selections in their usage. Also loved Terminal's placements for their rifles, Sword, and Rocket Launcher.