My thoughts on the discussion
Fusion Reactor:
We don't quite have that technology yet but we're getting closer. Some cool things to note, first of we can do fusion reactions pretty easily, the problem is getting useful work out of them. Fusion bombs, like the hydrogen bomb, for example are uncontrolled fusion reactions, great for blowing stuff up but not so great for powering stuff. In general, fusion reactions burn extremely hot, a nuclear bomb will burn hotter than the temperature of the sun, and currently no material ever known could withstand that heat without being damaged. So, one way to confine nuclear reactions is to simply not have them touch anything, but instead confine them with magnetic fields in a device known as a Tokamak. Within a Tokamak we can successfully control nuclear fusion, but unfortunately the amount of energy that is required to run the Tokamak is more than the energy that is released from nuclear fusion... currently. So currently, nuclear fusion isn't possible, and confining it into something small is even less possible, however as time progresses we might eventually crack it. All we need is for the nuclear fusion to release just a little bit more energy than it requires to actually fuse, in a controlled way, and we have a working fusion reactor.
Gamma Genesplicing:
This is a good way to get cancer, not really much more though, the chances of becoming a furry from gamma radiation mutating your cells DNA are next to none, the chances of getting cancer are quite high though.
Nano machines:
I don't exactly know how nano machines would truly help. I mean you could get nano machines to reform the body (an extremely painful and possibly deadly process), but if the body still has the same code and genetic DNA, it will just grow normally, the nano machines would need to, in order to keep fur growing and stuff, either change the humans hormone levels or the humans DNA, in which case why do you even really need the nano bots in the first place? If you can already change DNA, and introduce hormones into the system, nano machines wouldn't really give much of a benefit.
Birthing Anthros:
With genetic engineering being one of the most accelerated fields of science today, this seems possible (even in our life times maybe) but morally questionable. The thing your creating isn't you, and probably won't have the same opinions as you, even clones don't think the same. So, given that, what if they don't want to be Anthros as much as you do? Seems unreasonable to me!
Uploading brain data into a machine:
Cyberpunk! It would be really cool if we could do this, some things though.
1. The machine, where you uploaded your brain data to, wouldn't be you. It'd act like you, have your memories and have your thought processes, but it still wouldn't be you. You wouldn't experience what it experiences, it's basically just a clone, so for you being anthro it's still no luck!
2. Requires a lot of storage, which if Moore's law keeps true we'll get in only a few decades, but all signs are pointing to the end of moore's law, and the birth of Quantum Computers. But currently we're not entirely sure how efficient quantum storage will be compared to classical storage. Eventually there will be a limit to how much storage we can have, though obviously this limit will be much more than what our brain can store, it just means that the rate at which we expand our storage capacities is probably gonna be slowing (still increasing but no longer exponential), so might take a little longer to get to that stage.
3. We still don't understand how the brain words, and that's an important thing we need to do before we can get that going.