What would be nice is if Phalanx was a combo for Riot Blade. Increase the TP cost of Phalanx and have the combo bonus be a reduced recast time for Riot Blade.

If there's something I'm missing about why Riot Blade is ridiculously expensive and has a long recast time please enlighten me but it seems somewhat silly that the ability it combos into costs less TP and has 1/4th the recast time. Making Phalanx combo into it would fix it nicely I think.