If rides are the only things that matter, then DCA's ratio of height restriction/no height restriction should be addressed. Out of the ridable attractions (not shows/walk throughs) DCA has 11 rides with height restrictions and 9 rides with no height restrictions. I haven't heard any complaints regarding this ratio. Adding rides with no height restriction to DHS for the sake of adding them I think would have a negative effect. I can't see any justification for bringing in an attraction on caliber with Heimlich's Chew Chew Train, simply to increase the ride count and offer something for everyone. I feel alot of people (me included) would be thinking that were creating Dinorama 2.0 if that happened.
Personally any rides, height limit or not, would be welcome, but DHS is not all about the rides. The shows are a main part of it. People can go to DHS only for the rides, but they will probably have completed the park by lunchtime. Those are the people who claim it is a half-day park, and by those figures they are correct. But they are missing out on a major part of the park. The live shows. The Little Mermaid is fantastic. So is BatB and Indy. Now, I wouldn't mind seeing LMA, Indy, or American Idol being removed in favor of attractions, but I also feel there needs to be a presense of shows in DHS. A lot like Epcot and Animal Kingdom, I don't just go from one ride to the next. I like to take advantage of the unique qualities of the park like the themes, the music, the walk through attractions, the food, and the shows. Do I hope for some more attractions? of course. I would love to see Carsland, a Monsters Inc Coaster and maybe an Indy ride one day in DHS. That would be awesome. But to be honest I'd take anything that will make the overall appeal of the park better, whether that be height restrictions or no height restrictions.