Switching DH For Interleague Play

Alan Trammel has a great idea that I can't believe hasn't been pushed before. He suggests having a DH when an AL team plays in a NL park, and no DH when an NL team plays in a AL park (currently they use the rules of the home team). That way interleague play would give fans an opportunity to see the way baseball is played and the strategies used in the other league. It doesn't change the number of games a team has to play under the other leagues rules so their is no advantage to either league. It would just be an opportunity to expose fans to the type of baseball they wouldn't normally get to see. Wasn't that the purpose of interleague play (I mean, besides making owners more money)?