Hmm... I'm on the fence about it tbh. I personally never played a lot of the other arcade games... I almost only played spleef and paintball and infrequently tnt run and parkour.
It's often said that the old games weren't popular and hence removed. I have been on at different times and these new games do not appear to be any more popular than the old ones, with the exception of Layer Spleef and Paintball. At first they were because they were a novelty. But now that the novelty has worn off, most people just play Layer Spleef.
Still, we could do with more than 5 games, and incorporating some of the old ones into the new arcade system may be worth considering.
Based on what I have seen, I can't see a return of the old games like Parkour or Quake being any less popular than Line Dash or Barn Brawl. But I don't have the statistics, only observation based on the different times that I go on. A lot of the new arcade games are dead or people just up and leave and you gotta wait for people to join.