Google Drive gained its original steam as a streamlined (not to mention free) version of the bloated Microsoft Office productivity suite, so it's not terribly surprising that there may be more advanced features that you may need from your office suite that Google doesn't provide. But, you may have found an answer with a Drive add-on, and now some of those answers are available for Android users.
Google Drive add-ons aren't necessarily for everyone, but the additional features they offer can be quite helpful and save a lot of time. So, now being able to use those add-ons on your phone should make it even easier to get things done. The first round of Drive add-ons have made their way into the Play Store and include options like: DocuSign and PandaDoc, to easily sign documents; Google Classroom and Teacher Aide, to help teachers plan lessons and organize classes; and ProsperWorks CRM and Zoho CRM, to boost your sales teams.
Google said it worked with developers to bring this set of add-ons to the Play Store, and the success or failure of these add-ons could go a long way to getting more developers to translating their Drive add-ons for mobile. Given that there are hundreds of apps that can hook in to Drive right now, that could be a big shift in the future.