Sage now does this before every ITA meeting. They used to do this every now and again but after Intacct got serious about it, Sage doubled down. They don't put the same level of planning into the process but they have something every time.
Intacct uses ITA as it's partner development program rather than build it in-house like Sage did when Taylor was there. To capitalize on this, they hold a partner meeting before every ITA meeting, brining in their CEO and other ringers to coach the channel. I believe they have over half their channel in ITA now.