Hi,
I created https://phabricator.wikimedia.org/T227487, which proposes to add skipcaptcha to all users coming from throttle-exempted IP addresses (see /wmf-config/throttle.php in operations/mediawiki-config for that). This can make some events go more smoothly. Given users coming from such addresses are generally trusted, this shouldn't be an issue IMHO.
What do the others think?
Martin