Hi! Nominating him under SG1 is 100% fine. I understand your concern about not matching on him if you request him as part of a more specific fandom, but unfortunately you can't request the AMT and then DNW sections of canon. I think a lot of participants will be looking through requests to see who's offering their fandoms, and I'm sure Stargate fans would be happy to add a SG1-specific Daniel offer if they saw someone was requesting that. You are of course welcome to request SG1 Daniel and opt into Atlantis ships as well, but please only request SG-AMT Daniel if you're truly open to any media types, including SG Universe.