Well, I value dps over hate on my guard and it works fine in t4 - I was still maintanking with tiger chest/dps cloak/dps hands & S&S not long ago (55% mit without defensive maneuver). Also been using yag blue crit shield for a long while now (why won't my DT shield drop!)
I do use fearless chest/legs instead of indomi because of the protection and the fact that combat rating is a useless stat that doesn't scale with anything. I am totally going for indomi head and hands (& fearless hands for pvp or prot fights) to reach 20% crit chance without pots. I also use the t4 dps sword (the one with 128 base dps, whatever the name is) and wouldn't ever consider using anything else.
As for poletanking I do the same but right now I do more dps with s&s tanking (700-800 with a good raid) because I only have t3 (not crafted) pole.
At the end of the day just go for the most crits possible if you wanna do some dps with your guard (indomi only has noticeably more than fearless on a few parts).
I see no value in the t4 hate set unless you only do S&S tanking and want to mitigate more physical damage than everyone else (and it's still a minor difference).