Levels 30 have guns which remove the resistance and they are the only ones that can and lower levels when they fight with them have no chance of winning this is unfair, most will have 2 to three arms of these and are either physical or electric heat, reduce resistance in 10

I think it's a good idea to level browser with which you can find the levels that you want, depending on the level for example level 14 can pick fights with level 13,15,16 but not select yourself, ie select that I want to fight level 15 level only or all levels you have available.

I don't really understand your second suggestion, at first you said you can select what you fight but then you can you can't choose.

sorry I do not speak very good English and use a translator I'm just saying that you can choose with whom they want to fight according to their level (for levels if you are lvl 15 you can fight with 13,14,15,16 you select the level or levels).

I think I understand the question though this update would be something to consider much further into the future and something that is unlikely to be tried in a beta.