As every major change that happened to the game, it will have "lovers" and "haters"!
I don't blame either side, i would just prefer blizzard to merge several underpopulated servers together though, as a permanent solution that would help the communities grow, rather than offering a minor fix to the actual problem!
Cross realm features, are fascinating from the aspect "oh gosh, how much the technology evolved!" But they re really offer inferior solution to actual problems combared to what a real active and thirving community could offer!