About the mastery chamges

I've been seeing quite a few people claim there will be abuse cases for the mastery changes now, mostly with Fervor of Battle and Stormraider's Surge. And honestly, the examples I've heard I highly doubt will be worrisome.

Gnar and FoB is one I've heard, and this definitely won't be oppressive in lane for one main reason: he'll lose out on sustain and tankiness if he trades Grasp of the Undying for FoB, making him easy to gank early game and kite late game.

Then there's Juggernauts and fighters abusing the Stormraider's Surge mastery. The only way they could abuse this is by being allowed to reach and burst someone in the first place. As well as having to give up either the burst of Thunderlords Decree or tankiness from the Resolve tree.

The only issue I can see at all with the current mastery changes is potentially more damage to Brand and other DOT mages with DFT. As well as Stormraider's Surge being a mastery that will make Ashe utterly useless. Since the slow resist will ruin her kiting and bonus damage (hint: Riot please look at this).

Just remember guys, before you claim something looks abusive or overpowered think on the trade off and what must happen first.