This poster above summed it up... it's awful non canon now and never referanced.. in my opinion the only old Bat crossovers that are important and essential are knightfall because its the first time the Bat is Broken and No Mans land as its Epic in size and scope and both these Crossovers are still referanced in future stories years later like in morrissons Batman run.
Ps. You can also discard the(murder fugitive crossovers) another load of crap.