lets be honest here.
The whole MOD system in warframe is super restricting in almost every aspect.
you have 8 base spots on a grid, pets and sentinels excluded, to play around with.
1 is basically locked to the damage mod, and then followed by the usual ones, crit chance/ damage, multishot, range, health, ect.
so you are pretty much locked into using the same mods over and over with little to no flexibility.
As i play this game longer the more i despise pretty much how extremely small the pool of mods to pull from is. Even when new mods come out i dont use them unless they boost the aforementioned stats.....
Questions like "why isnt reload speed a exilis slot mod?" or "why is this warfame ability mod taking up a spot that i need for my usual mods?".
DE should think about adding a separate riven slot for each weapon, and 4 ability mod slots for each warframe.