Hello everyone;
First of all I'd like to point out although I'm no pro pvp player, I have done a fair amount of battling against other trainers through ratings 0 ; 300 and have asked about teams of some of those over 300 rating. Even with the release of the new choice items and eviolite which was a good update, we still encounter the usual pokemon on pretty much every team ex: Talonflame etc...
In atempts to try and counter these popular pokemon I've tried finding a good team that "counters" it or manages to be as powerful as it but in most cases fail due to lack of TMs obtainable or other pokemon not getting access to certain crucial moves to be considered top tier and being able to keep up with the usual gale wing talonflame without necessarily countering it.
So I personally think introducing these crucial TM's in the game could be a healthy way to diversify the play in pvp. ( and if it gets too strong then just ban it like you have been doing with many other features like shadow tag)
TM list to be obtainable:
-Nasty Plot (Favors the use of special sweepers which pvp lacks at the moment compared to the play rate of sword dance users)
-Focus Blast (Mainly to make alakazam and the newly added zoroark viable pvp pokemon)(also makes gengar users have more options and be less predictable)
-Grass Knot
-Quiver Dance (Increases the play rate of special sweepers, or some pokemon like bellossom could be played more frequently)
-Dark Pulse (Increases the play rate of dark special attackers like greninja who cannot learn it currently due to no TM)
-Rock climb (to make it more accessible to most of the new players since there's not much reward to be gotten out of such an effort)
-Aqua Jet (May be a good choice to add but still not entirely needed)
-Wild Charge (Would be interesting to increase the power of pokemon NEVER used like luxray)
-Stone Edge (Not obtainable on Aerodactyl without TM)
-Flash cannon(For special lucario's main STAB)
Feel free to comment bellow if there's any TM's like these that should be added in order to create more diversity in pvp.