Lightion

Uncharitable Spy
The problem with having Engineer on an MGE server is that it allows for the exploiting with the Eureka effect. Basically when you equip it and use the 'Home' Teleport it puts you in a Tiny Dark box. This spot is where everyone spawns so the map can recognise what arena they're meant to be put in. The map for whatever reason also engineers to build in that spot (incl. teleporters, Sentries, Dispensers) Which means an engineer can build an exit inside that area, put an entrance in the Arena he's in and put down a Sentry and start shooting people when they teleport in it. This also allows Pyros to come in and Start burning people of the opposite team.

Here's a demo of an Engineer building a sentry in that same spot: http://www.mediafire.com/file/bg6ag229qz4ndb4/exploit.dem

(It's kinda hard to see it, but its there)
 
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Maybe just remove the " Eureka effect" and not the engineer? That would prevent it from happening and not disallow a class to play.
 
Would removing the ability to build work?

Do Engineer MGE people use the gunslinger?
 
Would removing the ability to build work?

Do Engineer MGE people use the gunslinger?

Can't use the Eureka effect and the gunslinger at the same time; They're both different wrenches

Also to disable building you would have to modify the map. Call Cream-Tea for that one
 
Can't use the Eureka effect and the gunslinger at the same time; They're both different wrenches

Also to disable building you would have to modify the map. Call Cream-Tea for that one

I understand that they're different wrenches.

You don't have to modify the map, it can be disabled in a plugin.
We already do this for Jailbreak, no one is able to build anything.
 
You can and should be able to build. IE "gunslinger" popular one.
The issue is when you use the " Eureka effect" it brings you under the map (box) and allows to build in an area not meant to be.