The Trialmaster bossfight and access to it

I've completed around 500 maps and was completing Ultimatums in around 80% cases to the very end and fought Trialmaster only 3 times.
First two times i did kill him quite quickly becaue it was quite low map tier and i had way too much dps for it, so he died almost instantly. For the 3rd time I've fough with him, i actually had to do the mechanics and it felt really terrible dying there because it's not clear what certain mechanics do to you and you actually know how much you are losing by dying there and you don't have second chance to hop into arena and continute the fight.

In my opinions the issues here are:
- You can't fight Trialmaster at will, because encounter is random
- First issue leads to lack of experience fighting him causing you to lose, if your build can't oneshot him, or you literally cannot take damage due to your tankiness
- Losing there feels terrible because you don't have any chance to continue the fight and you know your losses (Every major bossfight gives you portals, but this one completely random and you don't have second chance). This one may sound contraversial because design is to create a situation where you risk something, but fight is too rare and you could have different combinations of modifiers leading to situation where it's almost impossible to see shit and actually learn mechanics

My suggestions:
- We should either be able to collect frags and fight trialmaster at will using your map device. For example we get all our rewards from this ultimatum chain within the frag(inscribed ultimatum) as the reward from round 10 and then use the map device to get into the Trialmaster arena and fight him.
- Fight itself should give a second chance to enter the arena if we die there.
- Boss mechanics should be explained with patch notes, so at least we could read what boss could do before jumping into the fight , IF(!) the fight never gives you second chance and is extremely rare at the same time.

Hope you'll take it into consideration, Thank you.

+1

where that Trialmaster boss? why its SOOOOOO rare?

looks like GGG dont care about boss and wont buff spawn rate at all...

rip ulti

Another awful idea of endgame boss if not the worst. Most builds cant even get to 10wave because the ultimatum arena is extremely EXTREMELY rippy if you are not some 100000ex mirror tier streamer or summoner you get 1shot by anything.
My max block gladiator with 10+mil dps dies in ultimatum due to the extreme number of monsters spawning around me and nuking me down. I could block Sirus's void beam but dont survive an arena full of trash...
2nd even if you get to the boss, you have 1 life. WTF is this sh**, this is not hardcore league.

I skipped most of the ultimatum because the league gives NOTHING to the game.
Another league where the 'boss' has no story whatsoever, doesnt have any connections to the game story, it's just a ritual arena with more monsters, more rippy, disgusting monsters and same you die you loose everything mechanics.

I only play the game to get the challenges but 36 feels impossible if i cant even get to the trialmaster.