Sooner or later adding something new - items - will lead to insane stats. Its impossible to avoid it - you can delay it but not avoid. If u leave eveything as it is, ppl will get bored and start leaving.
For good propoganda, increase pdef mdef and atk stats but not hp, so ppl wont understand
"huge boost" for that "huge boost" like for example drake armor i worked for 2 years, its not like with other sets, it didnt spawn in auction house, sadly