Should have did research beforehand? You wasted time on your own accord. That has nothing to do with bad game design. What you fail to realize is RNG is what it is. There are those who have bad luck with it and feel it's unbalanced and those who think it's just fine as is and have had better luck with it. Who are you to decide whose more right in this situation? Just because you didn't have the "luck" doesn't mean it's broken.
The limitation is there to not allow the player to steamroll every NPC thus diminishing the value of the game quickly. Also idk how good or bad you are as a TT player but I didn't find the limitation overly limiting. I did feel 30 was harder to reach then maybe 25 in comparison to how many NPCs you could logically beat with skill, however many of the NPCs you can either beat with baiting or abusing their rules and those that you can't you come back later after your upgrade.
Several guides are also already posted for each NPC on how to beat them by manipulating their AI. Your struggling now more because of your lack of research vs myself who didn't have any of this information at the beginning. But who is complaining? The person who has the information at their hands, not the one who had to figure it out by themselves.
RNG in TT is present in basically 2 1/2 ways. Getting a card, Chaos ruleset and on a lesser tangent Random ruleset however random loses more of its RNG element as you, get many more powerful cards at your disposal. The only complaint anyone can rationally make about Chaos, is against Swift because even with all the cards at your disposal he can still trump you with pure power (Marcette at the lower end). Lets not forget the regional rules that rotate daily to make these NPCs that host Random and Chaos rulesets mountains easier.
Often enough games that hand out things to you relatively quickly tend to die out at a much more alarming rate. Many newcomers to the MMO genre do not realize this. If you don't find it fun, then do not do it. Fun is also relative to the person. You may have fun grinding light simply because you love hearing Garuda's battle theme or have fun grinding a Siren card simply because you love Pharos Sirius.
Low and behold, you can also have fun with something and grind it, if you simply pace yourself.
Also the "That's MMO's for ya bro!!" comment you may not like but if you plan on succeeding in MMOs and enjoying them, you best accept it sooner then later otherwise you'll be very disgruntled during the play time your supposed to be having "fun" with as you say.
People in this thread do not feasibly accept that it's not 100% because if this they did, this very thread would not exist. My question to those is what is acceptable to you? Something you can obtain in less then 10 tries? How much of a % is ok if not 1%?
5%? Can you feel the difference or would you still call it 1%?
10%? Can you get it in less then 10 tries? What if you still can't beat a 10% chance? Does it still feel like 1% to you?
20%? 1 in 5 attempts, quick enough yet?
Once you go past 10%, you are getting into a zone where content can be completed very quickly in succession.