Of course there are ways to change things, these ways would be very drastic imo. I don't think it is fair either that the rules have changed along the way and that the members that joined before us are more powerful, but I know I cannot change this. Don't see yourself as a victim but rather work to get where you want, this is how I try to get where I want. I bet that if you have been here as long as I have now you would be as powerful as me if not more powerful.
If you don't think rp is fun then you should not do it, there are rules, they could be improved. Bad laws are made to be broken, it is a bad law, unwritten that is, that the oldest are the strongest. Break it! Show that you can be as powerful without being OP'ed. I know it can be done.
In any case, look at it from the point of few of the people that are considered old and OP'ed, they cannot do anything about the fact that they joined earlier, should they 'be punished' for that by taking their abilities for which they have worked away? I would not like that. I think it wouldn't be a problem for them to keep it as long as they use it responsive. Don't go on OP'ed mode against people who aren't OP'ed and so on.
I'm going to roleplay no matter what the rules state. I made it a goal of mine to become a Taijutsu Master and get the Eight Gates... So I'm going to do that. But it was just the fact that the rules are changing and making everyone who is up and coming weaker. So now what's going to happen when I'm finally Sage Rank with everything mastered and EIG? I'm going to fight these OP'd people and sure, I could be on there level or higher with Skill and RP Experience, but their abilities themselves can do things that RP Skill and Experience just can't make up for.
I always find roleplay fun and I always will, it's just things like this that favor a certain group of people really do tend to annoy me because it almost seems discouraging as if saying "You can get to my rank, but you'll never be at my level"
And there's nothing wrong with someone who is responsible keeping their abilities, but shouldn't that privilege then extend to newer people who have joined? The Mods have just assumed that new people will abuse it and can't have it, so where's the fairness in that exactly? That's like saying... "Since he RP's responsibly, we'll give him Mokuton, EIG, SM, MS, Rinnegan, FTG and any other ability he wants because we know he won't misuse it."
The whole point for me is the fact they have it there in their arsenal for use, capable of doing things no one else can, and simply because they joined first? That's just favoritism and letting them follow a different set of rules.