Just speculation; no offense intended.
Separation from the Others
There was no shortage of claimants as the Messiah. Simon of Paraea comes to mind, as well I recall someone called The Egyption. The literal term is zealot (not in the offensive way). There are many people in the 2,000's who claim to be the next-big-thing. Even David Karesh claimed to be some kind of Gift of Prophecy in Christianity.
This new-Jesus' followers must establish a way to create her as 'different' than the nutjobs. They must document very well the kind of miracles (or even teachings) the new-Jesus undertakes.
I suggest your new-Jesus establish precedent in the following.
Fulfilling a Prophesy
Your new Jesus must fulfill a prophecy. Unfortunately many of the old-testament prophecies, have been taken by old-Jesus. Your new Jesus can predict the future, but luckily not all prophecies are the future; for example, the First Epistle to the Corinthians suggests that you can spot that the right Messiah benefits the Church and not the individual. Sticking to these charms would do your new-Jesus well: Prophecy doesn't necessarily mean future-predictions.
Liturgy
Your new-Jesus should establish liturgy whereby it is a public gathering in worship, not wholly private. I think in order for new-Jesus to last 2,000 years, her legacy should be very public and very well-accepted over time.
Reputation Management
It's very important that new-Jesus has a pretty clean social media record; in today's (and presumably the future's) time anything you do is well documented. Those videos of new-Jesus should be well documented, but crystal clean and completely altruistic.
Communication
The followers of new-Jesus must ensure that her legacy and information is conveyed in the latest-and-greatest technology. Today that is dissemination among film, television, phone, and most importantly, Internet. But this has to continue in the future. One of the first products of the Gutenberg's Printing Press was a copy of the Bible. Heck, Moses had clay tablets and Mohamed had his writings as well. Whatever the teachings of the new-Jesus are, they should be documented in the latest technology very well. This might mean a lot of blogs...
ConvictionConviction
Whatever cosmic powers new-Jesus has, it will be the hardest thing in today's world to get started, but it needs to be timeless. Politically, she needs to focus on supporting the 'underdog,' which should include.
- Peace
- Meek Shall Inherit the Earth
- Altruism
- Health & Safety for all
Timelessness
I have no idea what will be taboo in tomorrow's world, but in order to protect reputation, there should be well documented caveat's in new-Jesus' teaching that allows flexibility. Other religions that don't allow this might be popular today, but that is out of desperation and acting out. Convictions (not necessarily religious) that allow flexibility have and will last longer.
This question is a tough cookie.