I'm sorry, but this has to be the most poorly written suggestion I've ever read. Not only did you not state what could be done to make the game better, you didn't even explain any problems. You're basically just swearing about the game. "I think we should have Saiyans" would have been a better suggestion.
1) The boosts are my main point. They're a joke. Laughable. Nothing. Nonexistent. Why a 50% boost? What the fuck does that even do for a player? Jack shit. And about the newbies getting the 100% boosts the high levels don't (It cuts off at about level 30ish, I think.), just no. Why would you even do this..
OK, let's be as constructive as possible and answer this question: What does a 50% boost do for a player? It increases drop rates by 50%. Compared to no boost, this roughly translates to killing 1.5x the amount of mobs in a given time. Let's say someone farmed enough to obtain 10 magatama as drops. If they did so under a 50% boost, they would have obtained an average of 15 magatama instead. Seems substantial to me. I can't tell if you have complaints about anything else regarding boosts.
2) The equipment is most certainly my second point. Sure, the equipment is good... But it's hard as hell to get if you don't do offers, get help, or pay. What's the point of telling someone that they need to get this, when they can't actually do it? Most, if not all of the new players rely on a carry.
What equipment is good, what equipment is hard to get, what could be done to make it easier to get, and why does it need to be made easier to get? You claim that most new players rely on a carry. How do you know that's true and why does it matter if some people play that way?
3) The partners are just... Why? It's obvious that you pay to get extra partner Scrolls; But WHY must you make someone pay to get one to begin with...? Pointless.
So you want all partners to have their first summoning scroll easily obtainable, and require OC for more scrolls? That's a reasonable suggestion, I guess. CS has already done exactly that with Hiraga Gennai and Izuna. The newest partner, Sasaki Koujirou, is also easily obtainable via a short quest although that quest seems to be event-only and you can't pay for more scrolls.
4) Drop rates are still terrible. In fact, I think they're worse.
What has been done to make drop rates worse?
5) EXP rates are just sad now. (Oh, wait, they've always been sad.)
OK, this one makes the least sense to me. When the game was first released, EXP rates were far behind JP and it took hours and hours of grinding just to get to level 20 or 30. But now, you can make a new character and get to level 100 in a day just by doing event dungeons available from the start in Onigashima. Leveling is so fast that players are generally rocketed far beyond the level of their current story dungeon. It is impossible to farm for friendship items or same-level weapons effectively without utilizing Nothingness Magatama, and the result is that new players are often spit out at level 100 with terrible level 50 weapons and no access to the game features required to make proper ones. Personally, I think that pre-100 EXP needs to be toned back down.
But based on what you've said, I don't know if you want EXP rates higher or lower and saying that they have always been the same forms a stark contradiction.