Howdy,
 
I'm in the process of putting together a proposal  to require the use of Continuously Increasing SEQ_CNT for Class 3 only in FCP-4.
 
The basic reasoning is to allow for easier/earlier detection of missing Sequences.
 
Note that IPoverFC and FC-SATA require the use of continuously increasing SEQ_CNT. As such, most if not all current FC HBAs at minimum should have the capability for supporting continuously increasing SEQ_CNT.
 
Please respond if you have any objections along with your reasoning.
 
Thanks...Dave
 
(no disclaimer)