If these are even looked at:

Iframe every other rift so I think that would be like a 2 or 3 second cd - It sucks getting destroyed in super armor with how slow we move in it coupled with how squish the class is. This is a middle ground I think. 

Another idea is to add FG to the SA.

Add FG to void gateways, even a FG on the charge up would be fine - Since the damage was nerfed I think this skill has way too long of a casting time to safely use now.

Full FG to Spatial Collapse - since the damage isn't completely nuts now and this would give you at least one skill in 1v1 people have to be careful around or can't just cc you immediately upon casting since it is slow. If you don't land the CC with this skill against any quick gap closing class (most of them), you are dead. 

Remove 17 second cd on finishing touch - unprotected and the damage was nerfed with the spatial collapse. It just feels so clunky not having this to followup. The two together probably do as much damage now as spatial by itself did pre-nerf. 

I really enjoy succession sage and the nerfs were needed but it just isn't the same anymore. Feel free to tell me if these seem too strong or post further suggestions. Try not to complain about other classes too much. 

Additional thought since I haven't abandoned the class yet: 

Illusion compression given a SA or let it be cancelled out of - This would give sage a huge 1v1 boost especially a SA.