Frankly to say i tried Excalibur demo once too, twisted it some time but not found nothing special though very want because was a big discount. The only thing free routing perhaps, but fx algos by itself seemed weak, and finally output fx section killed the last hope. Though noted very good optimisation, almost zero usage.
If speak about capabilities divided to price, i would remember rather Permut8 as example. (Or N20, though not cheap)
Personally, I think Excalibur is very good, precisely because of the algorithms, the pitch shifting
to me sounds top notch and better than most anything I've tried, excluding melodyne. The ringmod
as well, the rest of the fx, are good but not the best in the way of chorus, flange, phaser etc.
Anyway, certainly anyone could get by with other products, and definitely its quite expensive.
However, I am pretty tempted by the sale, yet still undecided. No doubt, many things can be said
about Carnes, but he definitely makes great plugins IHMO.