The Reddit post is excellent, as are many comments on it! Great to post it here!
In regards to the reaction system, there is clearly a divide, although it seems most agree the current system is lacking. Optional ways of dealing with it would be great, so you can have the current or popups, which according to quite a few isn't at all slowing down or disturbing but rather giving options during the enemy turns. Perhaps there are other ways though? Like maybe time slowing down and a "reaction button" lighting up that you can click and then you get popups with options, but if you don't click during the time window, nothing happens or the pre-selected reactions occur? Then you could set that "reaction time" window up and down in options, or turn it off? I don't know, but I am sure there are other ways to implement these things rather than just popups.