[MeOnTheBeach]

But 3,000 killed in 45 years hardly compares to, say, the Fourth Crusade,

Bit of a straw man there.

Regardless of the amount killed..the fact remains it happened and it was on going.

Again back to the OP, can this radical change in approach by these churches and a meshing of their acceptance of one another be considered a new church?

[Fiji Hill]

Three thousand killed in all of Northern Ireland in 45 years of sectarian strife? I’ll bet that feuding between rival gangs in Pico Rivera, Calif. has resulted in more deaths over the same period.

[Cronos]

can this radical change in approach by these churches and a meshing of their acceptance of one another be considered a new church?

No.

There will be one group led by the ECUSA which is the "gay liberal kirk"

There seems to be increasing unity between Catholics and Orthodox -- God willing and perhaps more unity with the orthodoxy Lutherans and Anglicans and Methodists and Copts, Armenians, Ethiopians and Assyrians

There will be some kind of Baptist-Pentecostal unity or perhaps a separate Baptist and Pentecostal, but these are too diverse even in each term to constitute one Church.