minimal BPMN 2.0
BPMN 2.0 support is an important differentiator at current BPMS market and Bizagi loses points in the eyes of prospective customers choosing the tool on the basis of the count of boxes checked.
It's hard to implement BPMN 2.0 in full so let me suggest a relatively easy first step. The following two features would let report BPMN 2.0 support in Bizagi BPMS:
1. Ability to read & write the standard XML representations for BPMN 2.0 (BPMN XSD).
2. Boolean attribute "Interrupting" for the attached events. (This is probably the most important change in BPMN 2.0 as for the notation itself.)