A quick musical stinger and a wipe that more or less replicates the title card seems to be a fairly common thing during BBC shows.
On the other hand, you don't necessarily need to have stopdowns during the show. To go back to the BBC, Mastermind appears to be a single 28-minute take.
Two things irked me about Two Minute Drill: one is that the amount of content was ten minutes instead of sixteen. Second is that the specialist round instead became the double-your-bucks question. One of the things I'm enjoying about having the entire 2015-2016 series to watch is learning about stuff that I wouldn't pick up a book to read normally but now I'm broadening my horizons a little.
Having watched as much on Netflix as I have in the past month or so, I really haven't given much thought to the fact that ad breaks are missing--the action just stops, fade to black for about a second and then it kicks back up. Just about any standard-issue game show could follow that path, and the bonus would be that with no restrictions on time that more content could be played. I do love my content.