When someone suggests that a rule should be different, the first test in my mind is whether the change is an improvement, or just a change. There are lots of issues where there may be a personal preference to one side or the other, but neither is demonstrably better. You've expressed a preference, but I can't say you've shown it to be better to have a choice. Indeed, minimizing potential confusion and pace of play issues is, in my opinion, an advantage to the current system. I definitely don't see an advantage to the "choice" system that more than offsets the advantages included in the current system.
19-degree hybrid or 20-degree utility iron
Iron set starts at 4-iron
I don't really think too deeply about gapping with my long clubs (as long as the distances aren't overlapping or bunched). I am not a good enough ball striker to need more than ballpark distances for gapping with fairway woods/hybrids/utility irons (I do care about gapping with irons/wedges though).
3W: I don't use my 3W that often, and I could probably leave it home and not notice. It is in the bag for 240+ yard approach shots like a 2nd shot into par-5, but my home course has relatively short par-5, so this is not common. Sometimes I will tee off with 3W just to make sure I get at least one or two swings with it a round. If I am playing away from my home course, I use 3W more often.
19-deg hybrid: Until recently, a hybrid was always my go-to club for tee shots on mid-length par-4 (say 380 yards or less), or just when driver is squirrely. I also like having this club for 220-230 yard approach shots, usually on a par-5. For whatever reason, I've always felt confident with a hybrid in hand on the tee - like I am going to keep the ball in play, and set myself up for a successful approach shot (not sure if my stats back this up or not though).
20-deg utility iron: Recently put this in the bag, at expense of the hybrid. The hybrid flies further, but I feel like my misses with long iron/utility iron are less severe than with hybrid/fairway wood type heads. Example, when I hit a pull with a hybrid or fairway wood, it is usually a pull draw, and ends up left of left. But when I hit a pull with a long iron/utility iron, there seems to be less curve in the miss, and the ball stays in play (this is completely anecdotal and I'm not sure if stats back it up). Still seeing how I feel about hybrid vs. utility iron and which one I'll end up keeping.