hi tom,
andrew s. aside...
i agree with both you and caroline.
i think any case studies of aolserver/tcl/postgresql in use is welcome. would it take away from the openacs userbase? possibly, but you add to those case studies the reasons why openacs was/wasn't/should have been used. i think the value of that material outweighs the risk, and if someone still makes the decision to not use a platform, at least they've made an educated decision.
as mentioned before, i'm having to go through my own justification with my employers. it can be difficult to build a case based mostly on things i've accumulated myself. people aren't necessarily going to believe in the platform until they understand why they should. the more i have to back my position, the more easily i can ask for time to make demos and proof-of-concept stuff.
it can be oversold and there can be too many hands in the cookie jar with too many promises made, but i think some of this stuff would be good.