StreamOfTheSky
Adventurer
In a party with all mages, two banning Abjuration should be fine, maybe even 3. One can be a diviner (and should NOT do focused specialist) and have just one banned school. The focused specialist illusionist is presumably going shadowcraft mage and will have plenty of versatility in return for the 3 banned schools. One guy may want to go Abjuror / Master Specialist / Initiate of the 7-fold Veil...he also would not want to focused specialist. The conjurors (may be ideal to actually have 2, it's so strong) should absolutely be focused specialists with abrupt jaunt.