When you click Find Declaration on a project file you have opened remotely (ie via SFTP) as long as the project settings have your local directory mapped to the remote one, then it should be able to calculate the same remote file it needs to open. Right now it opens up the local file matching the definition, but it would be nice if it could do that automatically with the remote file instead when working with a remote file to begin with (local opens local, remote opens remote). Its plausible not everyone would want this feature so maybe a setting to turn it on/off.

Keep up the good work on the awesome editor =)