Haha thanks for your concern! The request is actually for the Shuffle iT developers (y'all are reading this thread, right?).I'm there you for you, ha ha!
You may feel like you're just talking to Shuffle iT, and why would I even be involved, but I bet I can just shoot down this idea, because I made the game, and ultimately hold the rights. I won't need to threaten Shuffle iT with threatening RGG; everyone will want to get along and be friendly, and they will just not put in work on this feature that I don't want.
I have to admit that I find your reaction puzzling. All you had was one guy say, "Hey, let's add an option to the game." You've been pretty polite in your responses, but--at the same time--dismissive of the concept of making changes that others want (and that you, personally, do not like).
To move from this specific case to an abstract hypothetical . . . if there was some option that 90% of the players wanted, but you thought was silly/unwise, would you adopt that option? What if 95% of the people wanted it? Or 99.x% wanted it?
You obviously are open to the idea of changing Dominion around the edges . . . after all, you have retired some cards and swapped in new cards. And now I'm putting on my marketing/PR hat: At some point, if you are unwilling to adopt changes that the vast vast majority of players want; then they will say, "Why pay 25-33%, each year!!, for what it costs to buy real-life versions of the entire expansion + base set? I'll just buy the games and play in real life with my friends."
(I am smiling, imagining the scene centuries ago, as the inventor of chess said, "Wait. People want to add a piece that can hop over other pieces? And can move in one direction AND THEN in a second direction, on the same move?!?!??? That's crazy talk!
Wisdom of the masses, and all that.
Getting back to this actual specific topic. I love the randomness of the shuffle and would hate for the rules to be changed to mandate identical first/second hands. But the OP's suggestion was--to my mind--an interesting idea to try out . . . I admit to being complete bemused as to why you are so doggedly against having it as an option on this site.
And of course, I recognize that my free advice is worth what you paid for it. :-)