I think the AoOs make D&D combat more tactical .. without it, yes, it's much simpler, and also less tactical.
Personally .. I like the more complex tactics ... and I don't find AoOs themselves really slow things down ... maybe a bit of a learning curve there, but not much ... it's not rocket science ..
Grappling and some other options are much more problematic as far as cost-time goes than AoOs ... IMHO ...
Personally .. I like the more complex tactics ... and I don't find AoOs themselves really slow things down ... maybe a bit of a learning curve there, but not much ... it's not rocket science ..
Grappling and some other options are much more problematic as far as cost-time goes than AoOs ... IMHO ...