Lately I've been getting quite used to Log Luffy. I don't hate it anymore, honestly. So far, I've had two choices for doing Coliseum. Either use an Slasher team that relies on luck (or Koza, which suprisingly I still don't have) or a Log Luffy team. Most of the time the choice was Log Luffy.
So, yeah. I've grown used to him due to sheer necessity. Playing with him more often has made me realize something: a lot of people, before Akainu was introduced, talked about Log Luffy as if it was the best thing ever and a "I win" button. But it really isn't. There is no dream team for Log Luffy. You have to switch subs really often. He may be awesome, but you need to have worked your ass off to max other units if you really to enjoy how much stuff he is able to clear.
Since I don't have Enel, I got a bit more creative with my Apoo team. Decided to use 2x L. Luffy, DEX Hawkins, Doflamingo, Leo and my recently maxed Aokiji. It works really well. But I've had to max 2 Raid Bosses and a Coliseum unit in order to build it, which is quite a time sink.