I feel like with temporal manipulation there will be almost no reason (besides personal choice) to not take the psipill and make a hybrid.
it offers so much in terms of utility that even if you don't focus on maxing it at every level up, stuff like Stasis, Psycho-temporal Contraction and Limited Temporal Increment will probably fit in 99% of the builds, and 25% of your health isn't a price too heavy to pay if you postphone the pill for later when you have health to spare.
As for build ideas, i don't know you guys but i'll try a time manipulating swordsman (using machetes) once it releases.