Don't bring back the "Last Played Spec" feature for Team Builder.
Or if you do, make it an option that players can turn on in their settings.
I understand what rito wants to accomplish with the Last Played Spec feature. It makes sense to be able to queue up for another game and go right back to playing the exact same thing. However, this is not at all what I use the Team Builder mode for, usually. Usually when I'm playing Team Builder, I am always queuing up something different. A Team Builder game for me is either a warm-up game, a practice game on a champion I'm new to, or an attempt to get a quick first win of the day (It's easier to win in Team Builder than in ranked).
If you do bring this feature back, please don't force it on players who don't want to use it. Let us choose.