TOS and RO2 are not really similar at all, it’s kinda hard to compare them. I’m going to give a somewhat controversial opinion and say that I really liked RO2 for the first 6 months. It had problems but the raiding and pvp were really fun, and I met some awesome people in my guild. Unfortunately the combination of bad management decisions and the release of the Advent of Valkyrie expansion ruined the game. I never really minded that it was linear and quest-based while leveling, because the real game started when you were able to run raids.
TOS seems more focused on leveling, which is why I say it’s not really comparable. I’m interested in playing a different type of game like this, but as a player that came from RO2 and never played RO1 I’m hoping that TOS gets good raids because it takes skill to work well with a group and normal dungeons don’t really expose you to that level of difficultly.