Tommy:
Many clubs have this same situation and many don't change for the simple reason they don't like change, or the members complain too much about 'deep' rough, or as you noticed , conditioning.
As an observation, I have found more straight holes on the older courses and many more doglegs, some quite exaggerated, on the more modern designs. Personally, I like straight holes, because it poses more of a design challenge to make the hole interesting, if you don't have good topo to work with, or other natural features. As a golfer, I find straight holes more difficult to hit from the tee, even though I am always trying to hit the ball straight, doglegs holes seem to always suit my eye better.
Many of the old guard designers used great bunkering strategically and cutting into the line of play that in affect made the hole play much different than straight. Often the topo was such that thought the hole was straight as the crow flys, the player must 'work' the ball right or left to be successful and score.
I don't agree that the fairways would be "harder" to cut, different maybe to some minor degree. Years ago I cut fairways both straight and with contoured edges, but never found either to be harder. Mowing the fairways with contoured edges doesn't necessarily mean the hole will play any differently or feel different. If the edges are contoured to respond to natural features and if say the trees are not in straight lines, but scuplted more naturally, then the hole could be straight, but feel very different.
In the end resistance to change is often not complicated and nothing more than old clubs who just don't like to change, even if it would be good for the whole club. Hey, you should try and work through a master plan process and talk about significant change and see how many items members resist