"Deactivating" DLC on PC

For the record, I tried this with Genesis and Arrival removed last night, and what happened was...odd. The opening scene of ME2 started up without TIM or Miranda commenting on the fate of the Council like they do in the original game (i.e. it seemed to be the altered dialogue from Genesis), but without any background music. It then shifted to the opening scene on the Normandy, also without any background music. At that point I force-quit the game. I'll try putting Genesis back and see if anything changes - still hoping I can skip Arrival. I assume it'll give me the option to just import my choices from ME1 rather than going through the Genesis comic?

Yeah same here imported to ME2 just fine I jus tclicked no for doing the comic as I didn' t need or want to use it. I could see myself using the comics if I wanted to do a nwe game plus with a different world state or just didn' t feel like playing the other games. But generally when I'm in the mood for playing one of them I'll  likely just pla ythe whole trilogy as I often find myself in the mood for playing all 3.  I've not played ME3 yet on the LE so personally  can't comment on that. Also I can't really speak for it either as I don' t really mess around with folders in games beyond installing the occasional mod as too much of that can really ruin how the game works forcing you to have to reinstall it. TBH that's just too much of a headache for me I'd rather just focus on enjoying a game as it is rather than do that though that's my personal prefereence.