Wrong. Not me.
No. Not me.
Maybe.
Wrong. Not me. - Because I have presented my rational reasons.
No. Not me. - If it is a programming reason, we will know. We will get a flat out "no" for last name, then (either when time comes, or in advanced). And if it is the case, I assume we wouldn't be asked by Yoshi-san for our feedback and opinions. The only reasons why he wants our feedbacks would be, I think, because our opinions will count.
Maybe. - But time will tell. They will let us know if that.
So he wants different opinions from players in order to make a decision on this, or in order to find the best approach. We're willing to help. What I can do is to present my honest and sincere answer based on current experience and expectation for the future. What other undisclosed/unannounced reasons behind it (like the UI or programming issue you speculated) are beyond my grasp and thus I choose to disregard it.