unless major fleet engagements would tend more towards fewer losses and faster retreats, while making deep incursions into enemy territory into logistical challenges..
That's what i initially had in mind. That would be realistic. I doubt any ship Captian would just stand there getting mauled while they could jump instantaneously and retreat into another system. That would make Warfare fun, not to mention ship designs will also be more focused on survival than just DPS...