Hi,
sorry for late reply, it was a weekend for us.

1. Validation
validation depends on the type of the field, some fields have also some options in more to limit the data entered, for example:
- In the test you can define the size, also setting a regular expression
- In the date field you can configure a range of allowed values
Anyway we can give you a access to our demo site to see all features of Pro version, But for this you need to specify if you want to try also Social Network plugin.

2. Other Components
Easy Profile extends Joomla user profile, so registration and edit profile are the same of Joomla*. You can use all your users plugin. for example you can use plugin like "User - Profile" (installed with Joomla and disabled by default).
You can try this on free version.

* Custom fields are generated by our User plugin and tabs by Javascript


3. Menu Link
Edit profile page is the same of Joomla, so you can use same menu items for registration or edit profile page