Triamids are actually very good. Unfortuantely, you need to be smart to see it. So if you do not have the capacity to use Triamids, then buy Desperado or AG, you will definitely reach Plat or maybe even Legend someday.
I've been using them in KC with very few issues. Only one loss so far and that was because of a stupid mistake I made. The deck itself has very few problems. Covers defense and offense, recovery, destruction of set and face up cards, and a consistent search engine. It's just got kind of a slow playstyle.