I despise v4.
The environment forgets up (all colors become bright glow white and blue and then back to normal at random times), spawns are too close to each other, and this is practically a very slow-paced deathmatch, just barely scraping the bottom of the survival barrel.
Jesus, I'd rather have it like a page ago, buggy, and the same concept as before than this.
But hey, we're all entitled to opinions.