Consider that if you only spend it in the worthier modules, NEVER expend it to level up mech variants, you can save a lot. Provided you also play.. a LOT.
At the moment I've left like 150k gxp, and I've wasted 21500 over a master module due to a bug during the first double xp weekend ever, without considering the humongous waste of GXP I did to fully upgrade the useless artillery strike and its module, so I could be easily near to 200.
-The GXP is end-content stuff so you should really want to avoid to spend it to level up mech variants (play with them only!!)
-If you have many mechs, thanks to the recently introduced 2x bonus for the 1st victory of the day.. oh well, take advantage of it with as many mechs you own.
-Plan your unlocks: if you use LRMs prioritize adv sensor range and target decay asap; if you brawl cool shot 9 by 9 plus cool boost, advanced seismic sensor and target info gathering; if you snipe the zoom module, adv sensor range and target info gathering; if you are in a light then capture accel might be pretty useful, along either target info/seismic and so on. For other uses ask in this forum
![:)](https://static.mwomercs.com/forums/public/style_emoticons/default/smile.png)
Try to stay away from the other consumables (UAV, Artillery, Air strike, only the cool shot can be useful but given the cbill nerf you should employ it rarely); 360 target retention can be good if you like streaks or in a light but I wouldn't bother with it.