Id be a mixed type gym like gary in silver and gold. I think the last gyms always have to be dragon or mixed to make it harder.Pokemon would be:SalamenceKingdraArcanineElectivireTyranitarTorterra Possibly too many pseudo legendaries there but my dream team i think.Gym layout would be like brocks in first gen. A smallish room with 2 trainers using 2 or 3 pokemon each of mixed types. The challenger would have to face them to reach me.Bad would be called Element badge or something but the name and look doesnt matter to me.
Finally made up my mind.... lol (and yes, I deleted a post from slightly earlier to make some changes)My gym is going to be a straight path going up four stories with multiple battles along the way. One last battle among the final level. It is going to be a mixed type, but all of the first level will be stage one/ baby type pokemon....and an eevee The second level will be stage two pokemon...and an eevee The third stage will be stage three pokemon...and an eevee The final stage will be me as gym leader with the lineupVaporeonJolteonFlareonUmbrereon EspeonLeafeon My badge will be called the Eon badge
Hmm a Poison-type Gym maybe would be fun as first Gym.1. Gastly - 102. Skorupi - 113. Golbat - 13Gastly because duh, most started get normal moves and can induce paralyze/sleep from Gastly's movesetSkorupi inflicts poison, and somewhat compensates for potential bite users on GastlyFinally a simple Golbat, not too tough, with health sapping moves.Sort of challenge for early trainers. And before you ask me how can one get a Golbat below the level a Zubat evolves, don't ask me because there are Pokemon like that in the original games themselves.
You can catch lower lvl evolutions in wild