The accord described in this article was widely expected but its scope is not as broad or deep as both Weaver and Horgan (and their Parties) would have wished. Much depends on the capacity of Horgan and Weaver to work productively together and on whether the Liberals need 12 or more months to get a new leader and reorganize. 

Weaver is in the tougher spot.  He had maximum leverage before a striking a deal. 

The Greens are only significant in a handful of constituencies and need at least 2 years and a lot of work and good luck to be competitive with the Liberals and NDP in another election.  They will be blamed when the Government errors but receive little credit for the Government's successes. The Greens need the full 4 years to have a decent chance for a proportional representation system for the next General Election.