Do you keep track of owner participation (lineup exports, etc)? Not officially, I have a good enough memory to realize when some teams have missed an absurd amount in a row.
o Do you require owners to respond if they are going to be returning for the next season? In some cases. We're converting to ootp 6 now and I am requiring everyone sends an email stating if they are in or not.
o What do you consider to be an unacceptable percentage of lineup exports (not including opening day which should be 100% participation IMO)?
I dont care what % is sent in.
o Do you consider a lack of lineup export by an owner to be a sign of non-participation of a sign that no changes were needed?
Only if changes were needed.
o Do you ask or require owners to submit lineups even if they have no changes to make?
No. Even still, I am trying to do a better job of this in my other leagues. Have I missed an export yet Shane?
My attitude has a lot to do with the league. The UBL is a historic league and I know a lot of owners just like watching the history unfold.
If I were commishing a fictional league (which is something I want to do at some point) I would probably be a little more strict.