Thank you for those insights, @Six-Six!
I know not to expect Blaster levels of damage, but having played another Controller before I feel more let down with this one than I remember from the other. I was also considering Magic Bolt, which I took with that other Controller, but for this one it sadly does clash quite dramatically with the theme I'm going for (but on the other hand so does the Nemesis Staff).
I forgot to factor in Epic/Patron pools, good that you mentioned them.
I do thoroughly enjoy the control part. The tanking part I leave to my Brute friend, though some of the knockback then gets a bit in the way of his melee focus, which is why I respec'd Repulsion Bolt away and haven't taken Repulsion Field. I could of course slot a KB to KD. EDIT: nope, apparently not in Repulsion Field, the wiki says that disables the Repel part.
I'll have to look at Fold Space again, since I barely use Wormhole, good to know.
EDIT: as I understand it, Fold Space was replaced by Singularity(?)
Regarding Personal Force Field: I haven't slotted it in any way, but occasionally use it as my "Oh S#!t Button" when I have too much aggro and my health drops, so I have more time to heal myself and drop aggro.
Tactics also sounds useful, we both miss a bit to often for my taste. I think I'll add 1-2 slots to Stamina (currently only 1) and see what that does for my endurance problems.
Thanks!