I'll take it a bit further...
I wasn't around when the game started, but it had a fraction of the characters it does today. I've been around nearly a year and half and in that time the number has nearly doubled.
So, when it started, there were many fewer toons and they needed to limit growth so people wouldn't max out the system. Hence, 3 HM tries. More toons came along and they also probably realized 3 wasn't really viable, so it went 5. It was 5 when i started, and as i said, the number of toons has nearly doubled in that time frame, if not more more than doubled. You could give people 15 tries per HM (not advocating that) and they'd not get everyone to 7* in a year.
Thousands of people have started this game only knowing 8. Substantially more started only knowing 5. The bigger the game gets internally (number of toons and things to do) the more the internal structure needs to grow. When you let something like the 8 tries go on 8 months, NO ONE is thinking it's temporary and giving people a whopping 3-4 days before taking it back down is pretty bush league.
You know what would get people to spend crystals? Telling them that limit ends in 2ish months, not 3 days.
Sure, you like it as it benefits you. Is it better for the game overall? no. Is it going to generate more spending? I doubt it.
If you want to let people buy success, you ought to segregate them to their own corner of game. Whale vs Whale. What's the point of having a F2P person face off against some one spending 1000's in a month? It's not a contest.
Frankly, the 'I spend tons of money, people should cater to my wants and ignore everyone else' is what's wrong with society in general today.
