For ONLINEBITCOINGAMES.COM a list of trending/new Bitcoin based games may be cool, with affiliation etc... or even hosting and providing embedded games on your pages from other developers.

For BITCOINYE.COM I have always thought of adapting the concept of "Penny Auctions" to Bitcoin as this may be very rewarding! You can sell gift-cards and other trendy devices like what are actually doing all these sites. But you can go further in the specialization and sell only virtual currencies. I mean, users buy packs of 100/200/500 bids credits with BTC/LTC/DOGE... and you sell packs of 1.5 BTC, packs of 55 LTC, packs of 700K DOGE... This can offer the chance of winning a big prize for a modest spending, and also converting their coins to another type.