If cost is no object, yes, deflection is bad.

Progress sells spherical bearing kits for the lower control arms for the CRX, at a price, I think 179 a pair, although you might get them cheaper from a distributor.

I would guess the biggest benefit in reduced deflection would be seen by doing the front lowers and rear, lower, outer. May as well do the front radius arms, too.... but it will get expensive!!

J