Don't you feel you want to leave some room on your suits and guns for the inevitable changes, rebalancing passes and new mods?
I got still other 15 G3 to G4 suits in my inventory, dont worry for me, I bought them straight from store : P
BTW my 1000 mats inventory is filled with all highest value ones now, if I feel like to upgrade after dev screwed up anything, trust me, that is not an issue.
EDO upgrade system does not offer any room to change of mind, and most of mods are functionality upgrades, they are added as a feature, not the performance change.
The only thing I think has high risk of removal soon is hip fire + scope shotgun combo. But if they really change that, it does little impact on me, as I use shotgun in point blank when purposely get scanned. I don't like use it in cz or most of open ground gun fights. So you see, it's purely personal style related. There is no good or bad except reduced tool power mod on a Dominator suit lolz.