1)
Why does it say "Diminu Elokim Chasdecha"?
1.
Rashi: The Navi prays and says 'we hoped for Your Chesed, to see Your salvation in Your Heichal.' Radak - this is like "Domu 1 Ad Hagi'enu Aleichem" (Shmuel I, 14:9).
2.
Rashi citing Menachem: It is an expression of thought, like "Al Tedami b'Nafshech" (Esther 4:13). Radak - we thought in our hearts when the nations fought against us, that Your Chesed, which is in Your Heichal, will save us.
3.
Malbim: Until now, we had no image of Din and Mishpat, only Chesed, in Your Heichal.
1
Seemingly, there it is an expression of being quiet or waiting. Radak there explained that it is to wait! (PF)