Well my point is why would he target Suguha at all? it's not a person that's in his way, now mind you as i said in my first comment:
I didn't necessarily mean that Liz has a romantic interest in Asuna, just a sexual one.
She wants to go shopping for revealing clothes with her, she like fooling around with her and on 6.4 she didn't want to hang out with Kirito after she invited both of them to karaoke but Asuna said she wouldn't come.
Now to be fair the last one is probably because she wanted to check on Asuna but it's still a bit strange that she would just pass up an opportunity to hang out with Kirito.
And that's why I said it's very unlikely, like, if the stories never properly cross then yes, Inoda would never bother targeting Suguha, but if they did I don't think there is a 0 chance he would target Sugu even without her directly meddling, reminder that besides his Asuna obsession he has a massive nonsensical hate-boner with Kirito, so I could see him targeting her too if he noticed she's into him like he pointed out he noticed with Liz, but your theory is a lot more 'logical' too, yeah. I wouldn't mind either myself, but as mentioned, it's sadly most likely Fujino will be keeping the stories separated.
As for the Liz&Asuna thing, I'm thinking that's just more of Fujino setting things up for Liz to get "caught" by Inoda and fueling the "NTR feel" than having her being sexually interested in Asuna, I mean, the characters HAVE acted all massively OOC and randomly through the entire game several times, most people just don't mind/care because they're here for the NTR but if you actually like SAO/the characters is very easy to see. Having Liz actually take advantage of a situation to get closer to Kirito would mean he has to write a scene about the two of them bonding which is probably pointless, kinda how he went and made Suguha be constantly angry and a jerk to Kirito 90% of the time rather than anything how she actually is. At the end of the day the characters will act how it more benefits the NTR storytelling rather than 'logically', after all.
In the end though, I guess we will just have to wait and see how Fujino decides to approach things, he may yet surprise us in one way or another.