I have spent the last week or so updating my web application to a couple of plugins from JQuery UI, such as autocomplete and dialog. In the past, I have used separate plugins to achieve the same like autocomplete and jqModal. The thing is, the more I play with JQuery UI the more I find issues and complexities that didn't exist in other plugins. Yes, it's modular and allows one to build upon the core plugins and interactions, but it seems to lack features that were just built in to other plugins that are distributed individually. Also, it seems to me that JQuery UI adds another layer over of development JQuery and my current application, especially with its own theming and complicated CSS classes.
So I am thinking of moving back to just combining separate plugins in to one minified JS file. Is that the wrong path to choose? Is it not okay to combine individual autocomplete, form, modal window, datepicker plugins etc.