Hi Robert,
There are settings to remove the Ratings and Login Form.
For Ratings, you can disable it here:
Integrations>yourComponent>Workflow>General>Enable Ratings>No(
http://take.ms/Yi35R)
There is a documention to hide the login form
here
For the rest you have to edit the files. To remove 'Add Yours', if you are using the Cleo theme, head to this file:
JoomlaFolder/components/com_komento/themes/cleo/comment/tools.php and remove the related code(
http://take.ms/B6sfQ).
For the buttons, you can apply the custom css codes below the file:
JoomlaFolder/templates/protostar/html/com_komento/assets/css/common.css (create directory and file if it does not exist)
div#section-kmt.theme-cleo .kmt-toolbar .kmt-subs-email a, .kmt-subs-rss a {
height:inherit !important;
}
Also, do take note that in Komento 3.0 is on the horizon(
link).