I think frost and fire need raid buffs.
That 3% base to frostbolt is before any multipliers in the tree? So maybe its a tweak they are adjusting slightly to see the results. The buff to ray of frost might make it better than splitting ice on ST and given that you can shatter the whole thing it could be great mini burst for adds and stuff too.
I think they have broken fire by making ignite too strong and aren’t sure how to buff its ST without making it too strong, as it gains secondaries its cleave is going to be very strong, there’s just no mages stacking haste gear to check it out. Fire’s got problems that aren’t easily fixed and Arcane having the same dmg profile is a big one too.
As for m+ the aoe changes for fire are nice and hopefully will make the aoe rotation an option. Fire’s ok in dungeons where it can use its ST combusts well but other dungeons it’s really poor when there’s no mob to stay alive long enough to keep the ignite rolling. Having flamestrike rotation do dmg will be a big boost and may be an alternative to arcane when melee is crowded.
I don’t think frost has a problem in m+. It’s has it strengths and its weaknesses. Toughest boss in the game is the tree in AA and its brilliant on that fight scaling up off all the targets. If your in lower keys with shorter pulls you might be struggling to get the dmg out of IV and keeping orbs up but in keys where the timer is issue thats not a problem.