I made a poke cake for a July 4th picnic and it came out great. I used a name brand white cake mix (I can't remember which one) which said you could use whole eggs instead of just the whites, which I did. It was so good, and I didn't have to find a use for extra yolks.
Also, I prefer the traditional icing of vanilla pudding mixed with Cool Whip. Very rich and not too sweet. This recipe calls for Betty Crocker pre-made icing, but I guess that's because Betty Crocker doesn't make pudding mix! May as well try to sell one of their own products!