60-70m boundaries just take all the risk out for international players, theres no need to time it or play for a gap they can just slog.
surely the balance of bat v ball would be better if they were 85-90m , i doubt the total scores would be much different as placement and running between the wickets would be more of an importance and the better players would still score.
are the short boundaries driven by TV companies as its more 'exciting' to watch? or the actual teams who can just fill the batting line up with hitters instead of batsmen?
either way, the likes of root, kohli, williamson would still do well but there are some right postage stamp bullies out there