I really really wish some nice scanlation team would do some of those sweet Otabek x Yurio doujinshis.
Oh yes! If anyone here likes the "slow romance sports" concept & prefers more masculine bodies over slender bishounen, you should check out this manga called 10 Dance. It's about a ballroom dancer & a latin dancer who want to learn eachother's dancing styles. they're both straight, but when you grind up against another person for hours every day, sexual tension is going to happen.
They have Yuri and Otabek doujinshis on here, you just need to check. I've read a couple myself
Not bad, not bad. With the right story angle I can see Yuri as a seme. Viktor is taller, older, & more built, but Yuri always seems to be in a perpetual state of horniness. Even when he's the uke, Yuri would be the one to make the first move because Viktor usually asks Yuri what he'd rather do rather than making the decisions for him. Those are things a lot of doujinshika ignore or forget about their personalities when making doujinshis.