About two years ago, CCP tweaked the drop rates on meta modules in missions, drastically increasing their drop rate. Since then, the prices of meta 1-4 "named" modules have been slowly falling. The first mod I saw significantly effected by this was the Y-T8 (now Experimental) 10MN MWDs, but pretty much everything, including meta 4 guns has been becoming more and more affordable.
In many cases, where a meta 4 module has the exact same stats (as well as lower fitting requirements), there is little to no reason to use the T2 version anymore. This is especially true for mid slot modules, such as sensor boosters, target painters, and tracking disruptors, just to name a few. Even a few years ago, the rarity and demand for meta 4 versions of modules made them MUCH less affordable than the T2 counterpart, giving most people a good reason to train for the T2 version. Now in many cases, that just isn't true.
Has anyone else out there noticed this / is concerned by it?