should the galdiator be its own class ,or arch type ,or sub class.what are your thoughts on this?
I think a battlemaster fighter with the Entertainer (gladiator) background should work pretty well 
I like the idea of Dark Sun being totally different from the normal DnD campaigns. I like the idea of all custom classes without the core classes.
Gladiators instead of fighters would be good. It would be cool to see them as the masters of improvised weapons. With the number of weapons that break in their hands, they learn to use anything under the sun as a weapon. Letting them use sand as a weapon if need be. I think there would be many ways to make them different than a core fighter. I would give them a greater toughness because they can’t go around in hot heavy armor. This is just a couple ideas.
i agree .. i am going to make it its own clas
Gladiator
Armor: all armor and shield
Weapons: special proficiency with unique weapons also all standard ones.
Tools: weapons kit. This kit has the equipment need to repair stone, wood, or bone, weapons and armor. Sometime a DM may call for a check if special items are needed to fix certain items. You add your proficiency bonus to the check. These repairs take place during down time activities. Even though a check maybe required to obtain some of the materials the cost is as follows for each material. Bone- 01 -33%. Wood 34- 69%. Bone 70-100% these percentage rolls determine which material you will be able to repair in a 24 hour period until another attempt can be made. If you roll make a repair and roll a second dc ability check (survival) DC is 8+ number of repairs then that weapon no longer suffers the breakage rules .the maximum repairs that can be made is a number of critical hits equal to 10 times.
Renown:
Arena acting: at 3rd level
Armor optimization: 5 level
Unarmed combat: 7th level
Gladiator’s cunning: 9th level
Brutal display: 13level:
15th level
18th level
Battle mind: 20
thats all i have so far as an arch type
It was in previous-versions.
i have the test packet that where most of those abilities come form and some iam useing others i do not wnat to mimic the battle master so any sugestion would help.