This is the subject of much debate on these forums. In order for you to see linetypes in any way close to what they will resemble in a scaled Viewport, you will need to persuade your colleagues to draw using Design Layer scales that match the intended output of the drawing.   A common misunderstanding concerning the use of Design Layer scale is that you are pre-scaling your objects. This is not the case. What you are doing is providing WYSIWYG functionality with Linetypes, Lineweights,
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