dyrus has been playing kha'zix a little more frequently recently (most current was against coL during week 10) and is certainly capable of playing the champion, but i agree that if TSM gets their hands on kha'zix or diana, regi's going to make better use of the pick than dyrusI was impressed with Zion's play and I really like how some of these toplaners are developing in the NA scene. Though Dyrone will probably remain the best toplaner in NA for a while. His champ pool is very good, I think the only champ he really doesn't play is Kha'Zix and toplane Diana (but he doesn't need to learn Diana cause she will always go to regi if TSM picks her). I think Zion out of all the toplaners has the potential to pass up voyboy though for that second spot. I have no clue why Voyboy doesn't play Rumble though, a very popular and good pick that TSM abused.
dyrus really excels on tanky champions which is why TSM has been nonstop spamming rumble and renekton for basically the last dozen games
when you consider that rumble and renekton are two of the most commonly picked champions in asia right now, having a top laner that can play both of them will be invaluable for NA during allstars week
two champions that dyrus doesn't play very much, however, are elise and zed, both of which are part of sOAZ's champion pool and both of which are also hotly contested picks in asia at the moment
although shy is more prone to the same tanky picks that dyrus plays, both stanley and caomei have shown some really frightening elise play recently and they're going to be the wild cards to look out for imo, in addition to sOAZ (this is assuming of course that caomei makes the chinese all-star team which may not happen at this rate)