Coming from the Alliance side of Lighteninghoof (RPPvP - low population - Horde dominated), CRZ stinks. We still have all the disadvantages of a low population realm (difficulties in recruiting, etc.). We have new problems from the CRZ. Any materials that are from zones that are cross realm now are basically non-existent. I'm currently trying to camp some ghost mushroom spawns to make invisibility potions to do challenge mode dungeons. Herbs are now rare spawns... let alone the rare spawn mobs and pets.
For an added bonus, we get to hang out with every single Horde jerk on every other RPPvP realm who wants to spend their time camping lowbies. The stated reasoning for CRZ was to get players out in the world. I no longer level alts in the world. It used to be fun. Now, leveling an alt is a frustrating endeavor that involves serving as one-shot targets for bored players from other servers. Any alts level through dungeons exclusively. With just our server, we were able to enforce what we considered honorable pvp (by making the offenders regret their actions). However, the realm pool population is too large to educate every person out there. Only one continent exists anymore... huzzah for the small world.