I believe the new Sen roster is currently in the process of limit testing, which is why you're seeing a lot of role swaps and experimental comps lately. Limit testing in this context is all about pushing boundaries, understanding each player's potential in different roles, and discovering fresh dynamics within the team. By trying out various setups and playstyles, the team can find out what works best under different scenarios, allowing them to approach matches with more flexibility and confidence.
To be honest this is what we should expect of every t1 team but i guess some teams (C9) arent implementing anything as of yet but to each their own i guess so i dont get the hate as you cant compare rosters at all because realistically things are going to change drastically by the time VCT starts and no official matches have taken place to even compare previous rosters