That can work for now, but you may find a problem when your wedge hits say 110 or more instead of 90. Then, only having two wedges can make it tough to hit some of the shots needed. Given your club setup, I'd probably play it the same way as you do with just the two wedges.
For me, I have a 227-yard 3W, a 200-yard 3I, and a 110-yard PW. I carry 3 wedges: 90, 75, and 50. I'm still wanting to upgrade the starter LW for a 60-yard wedge to close that gap and for better stopping power.
To the OP, I think you're right that being able to remove the 3-iron is a good idea and might increase sales of hybrids.