Limiting the number of witnesses in the list is intended to avoid wasting API node resources.
In the next update, I will increase the selectable number to 300.
However, I think for a new witness node, the most important thing is to quickly accumulate around 30K HP in votes—then it can enter the top 200. 😀
yes it is but these days also very hard to find those 30k , since a lot of people don't even use their witness votes , or are still voting for inactive witnesses.