As Yeti, who I really like and keep relevant.
And then we have centaur, and other bunch of heroes of different value.
It's a part of a the metagame - to understand or at least to check what heroes is worth leveling and who should be left behind long ago.
Dragon lady is iconic case - she ALWAYS were mediocre tank for starters and newbies or just not very competent players usually keep maxing her out expecting she will be viable because "Dragon Lady is a flagship hero"- I mean she's on loading screen now what? totaly unrelated things, mind you.
I can't find any other explanation why people want DrLady being buffed for whatever reason.
She doesn't have any utility or specific application to be interesting, just a mediocre tank with outdated design.
I really like centaur's kit and his legendary is even worse, so I'm not going bother to level him any time soon and not definitely going to post forum topic every week because it's apparent as day he's a dumpster-class hero.
At this point the most real thing I'd expect from Japan Gree is to make new hero who would be very reminiscent of her with much appealing but still likely design (universal dragonfighter tank with stuns + magic damage + healing).
Again, every tank still is a complete joke while Dust Devil legendary bug exist.
UPD: as I think of it more what I've written about dragon lady reboot, Dragon Slayer is already really look like Dragon Lady v2 except she has no magic damage