Well, I really hope that Ascension Perks benefit from other additions, like new, more diverse traits (genemodding already being something that you just do once, and there aren't many traits to pick from anyway), or specific gameplay for Synths (to avoid the "yayyy, I'm now playing with Synths! Which can do amazing things, like... being immortal... fighting harder... and not eating food... yay....).
More techs and events are also nice, but that's not really gameplay if it just provides bonuses and modificators.
I'm not really hyped by Ascension Perks that just provide you plain bonus like border range. I can't really imagine a sci fi universe with something like "By all my positrons, the Metagurd have ascended! - What does this mean, CI80-rg? Do they control the atoms by the power of their minds? Did they become gods? Are they going to... - Their border grew and they claimed our world. Now we are ascended too. Look at that nice border range on the map.".
It feels more like a Tradition. Well, except probably if it's something like a +100% border range, but it doesn't seem fun.
I also hope that this means there's a point in playing in end game. Most of these Ascension Perks seem to provide bonus and new abilities, but if they don't provide new challenges, or if it cannot change the course of things... meh. It would be amazing if the first empire to achieve transcendence could become a threat for the rest of galaxy, even if they are a tiny 3 systems-empire at this point. Not necessarily on the military field, btw. But they could hack the economy of all the other empire without an efficient enough AI to protect them, for example. Or possess the ability to shield their world thanks to their psionic powers. Well, I do hope we'll have these kinds of abilities.
I would really be hyped if, as the first empire to reach the end of the synthetic path, we could embark with our synthetic pops in gigantic nomadic planet-consuming space fortresses, not caring for the lifes of biological pops, and if the other empires could form a galaxy council to oppose us, while the robotic beings of the galaxy could choose between joining our way of life or helping those poor bio units. Basically, becoming the end game crisis.