I would just like to reiterate that, in the official version of RO that i played, the ‘normal’ enhancement goes: safe to a certain +(that’s 4~7 iirc, depending on the item and item level). After that. it’s gone if the enhancement fails. Many things changed afterwards then, like having different kinds of enhancement mats (which may or may have not been p2w depending on your viewpoint, and version). The nice thing (back then) was that one doesn’t really need overupped equips to do well in contents (pve, pvp, etc.)
I believe what we have in TOS is much more tame. Only that, i can’t say for sure if content in TOS can be done well if the items aren’t over upgraded.
On the other hand, in a game called Dragon Nest, before the latest updates, equipment enhancement is capped at +15. Safe enhancement is around +6 or 7. After that, just like RO, equipment gets destroyed upon failure… But wait, there’s more. There’s an item called jelly which can ‘protect’ your equipment from getting destroyed upon failure. The catch is… you can buy it in the cash shop. (Though to be fair, the game publisher of the version i am playing gave a lot of events that produced free jellies). Basically you can reach the enhancement level you want as long as you have the resources. Good thing (before) was that, in the early days, +6~+8 was enough to do content, then power creep came, +10 seemed to became the norm. Now, idk. Also, from what i remember, if you wanna do endgame content seriously, be ready to have the best equipment (most expensive and hard to make) ready, and the minimum enhancement i am seeing mostly is at least +12.
I’ll leave it up to the readers if they think the aforementioned systems are better than what we have in TOS.