Yes, when i completed him last cycle, i tried and team up Kakashi[Anbu] with Itachi[Anbu] and Masked Man, using Firemain and Lightning main .. It feels like it is lacking in some aspects and just lacking something .. But i guess if he's with Shisui, the team will be more efficient and more reliable .. Maybe with Danzo too ..

Keep your coupons for now and wait for better Ninjas in next event cycles, you may also end up completing your Kakashi[Anbu] from gaining his fragments for free from the next events ..