Because when it's slow at work, my mind wanders. If I had unlimited time to play LOL I'd like to mess around with Swain, Malz and Viktor more.
Viktor because he's fun to play and the Creator Viktor skin is amazing. Unfortunately he isn't very good in the current meta. Might be a sleeper Tier 2ish support champ but other champs do things better. I think he's worth testing as a support though. Might not actually be terrible with some CDR and augmented W. But Annie will still be better.
I'm convinced with a few changes Swain could be really excellent as a tank but they are forthcoming. Game needs more spell vamp though and he would become a magical Mundo. Unfortunately in a world where Shyvanna exists, he will be outclassed in the top lane and there are so many better picks mid. DFG->E->Q->W->Ignite will still wreck face with Lhiandrys and Rylais. Game needs more pimp cane.
As far as Malz, I think there might be something with his kit with his W for tank shredding. With CDR and Black Cleaver, your Voidlings will shred the shit out of a tank. Your W does %%hp damage, but also scales with AP that goes against your voidlings. To play him top, he needs more mobility/tankiness and that doesn't exist.
It's too bad Riot didn't make some new items for S4 outside the Support/Jungle stuff. I think Malz's kit would really be interesting to play, but he requires too much to do things with. He's fun as hell to play though.