Rabban Yochanan ben Zaki, who lived at the time of the Churban, instituted Takanos which were built into Halacha which reflect our hope and belief that the Beis Hamikdash will be rebuilt(Rosh Hashana 30A).

Regarding Kinnos, it is certainly worthwhile to invest in one with a good translation –hard or soft cover–, as this could help one daven, which in turn, helps one merit to see the Geulah. Regarding discarding it, I also have heard a story of a Tzadik who buried kinnos from year to year.

However, similar to what Bob has pointed out, buying a hard cover text, or not discarding whatever type one buys, is no less a lack of bitachon than buying leather-bound siddurim with our current tefillah texts, or I would add, making permanent revisions in one’s home(however, I don’t think anyone will order a leather-bound kinnos as a gift–this can be seen as a bad omen!).

Furthermore, one can theoretically study the Kinnos the entire year in preparation for next Tisha B’aav(which would be a positive thing), or for the value inherent in understanding the works of the great paytanim.

If you expect that everything will be OK next week, and then the war goes on, you’re disappointed and you might get desparate. If you expect it to go on and on and on, you’ll be happy whenever it ends.

we are all a mix of holy and secular

We also have many nicely hardbound editions of Kinot. Are there any Gedolim (belonging to any group) who now recommend softcover only?

In the Amidah and other formal prayers, we beseech HaShem for the restoration of the Torah system of justice, the Davidic dynasty, the Temple and its sacrifices, real peace…

While we fervently hope these will arrive today, we, nevertheless, use hardcover siddurim.