Everyone will have differing opinions but as Shougun put it quite well - "You have a house, let me get a new one" is quite an unfair opinion to have.
I also want to stress that a house moving feature does not reduce the number of plots available. It's trading a plot for a plot. People who don't have a house, don't have less of a chance of obtaining one - it in fact opens up slots in current zones (which are not currently available) for those that actually do not wish to buy a plot in the new zone. It's a win/win for most people..
Even if you wish to argue that a house mover can "tell their friends" that they are moving - this will happen whether the moving feature is there or not.
Player wants to move, so they relinquish their plot and their friend buys it off them immediately.
Player now does not have a house and is able to buy a plot in the new zone.
This can happen today, or tomorrow, or 5 days before the new zone is opened. You have literally no chance in knowing when this would happen..
The only difference here with allowing a move feature is likely even more advantageous to people who aren't friends with this person - as the player can only move when the new plot opens. This time is very predictable and is up for grabs to pretty much anyone - as they will obviously "relinquish" their old plot the moment they move, which is also when the new zone opens.
The argument that "you paid 50 mil, and you already reaped the benefits so you should have to relinquish it and pay it again!" is utter rubbish.
When I paid 50 mil for my house, I expected that I would never have to pay money for a house ever again - aside from perhaps some kind of fee if the move feature ever came in play, and/or any new addon features ended up popping up.
As for the comment about "being at work" - sorry but no. That's not an excuse.
It sucks that you had work, it really does. However in a game setting, you still had the same opportunity. I am sure other people have personal life reasons why they weren't able to be online at the time each wave of the wards opened - however that is purely on their neck, not on SE or the player's who made sure they were able to login on time to purchase one.
Lastly I do wish to raise some current issues about the housing system that I really hope we see resolved before Shirogane gets released. So this is the section of my post you guys probably will agree with (at least some of them).
1) 1 house, per server, per account - This is obvious why. People are buying houses on their lvl 1 alts, or empty rank-8 FC's, attempting to make money from it or simply to say "I have 16 houses because I am an a.hole".
2) Delay sale of houses for 1hr after maintanence, and open wards progressively (perhaps 2-hourly) rather than all at once - While this might not solve the issue entirely, however open Ward 1, 1hr after maintainance ends. Open Ward 2, 2hrs after ward 1 opened etc etc.. Until all wards are open / sold. My reason for suggesting something like this is it will avoid the "server's up! flock to to the wards!".. It will also give people a chance to get situated and "camp".. In addition to this, none of this "I was at work" excuse would be a thing unless you work 22 hour days (11 wards currently, 2hrs per ward = 22hours).
3) Open half the wards up for movers only (perhaps subdivision?), and half the wards up for new home owners - Look, I am fine to meet you guys half way. If you don't want movers to take all the "new and shiny" plots (which won't happen by the way.. I daresay the move feature will be more complicated than it is to buy a house which already puts us at a disadvantage) then split them, 50/50.. Yes you will get half the available plots in the new wards - however you will also get those xx amount of plots from the movers once all is said and done available to you for purchase - after they have moved.