Been lurking here for a while, haven't shared anything so here's my chance. Not sure if this is a repeat, if so, I apologize.
Anyways, If you have gladiator, you can get it next season (even if you didnt make the cut that season) easily.
My friends and I did this after season 1 since we didnt make the cut technically for s2 gladiator.
The process is simple but obviously, you have to have attained gladiator in some previous season.
1) On the day before the titles are distributed, after the season ends, have your friend use a proxy to log on your account and delete the character that has the title you wish to retain.
2) Wait until the new season titles & mounts are distributed
3) Log on your account and petition a GM saying you were hacked and your character was deleted.
4) They will investigate and see a foreign IP logged on, then they will reinstate your character to its state EXACTLYwhen it got deleted.
5) Since you had Gladiator when the character got deleted, when they restore it, the title will be there.
* This is confirmed and was used by me for S2, and we'll be using it again this season to keep our titles. Good luck! If you need any more clarifications, lemme know.