I think you will find that quite a lot of FFXI players wont touch FFXIV, many will, but not enough so they will need new players in order to make up for that, don't expect FFXIV:ARR to make that big of a difference just because you are excited about it. the reason the original failed was many factors, the biggest of which it made many of the systems it ran on choke, if ARR doesn't alleviate this problem it will not replace FFXI because the simple fact is FFXI runs on older systems and many people with those older systems cannot afford to upgrade to one that will handle XIV as it was properly, we shall see if ARR fixes that, I'm not going to hold my breath though