As with any server, it's down to personal preference
If people have the money and want to spend the money on any private server, its their own choice if this guy is bringing his 3rd server in x months then I guess that's up to the players to decide if they want to sink money into a server that might not be here in the next 3-6 months.
It is a bit sad to see so many GMs do under the table deals, if you want to sell items n such, just throw it in the game shop so everyone can see what is truly for sale, if you are willing to sell anything on your server, just put it all in the GS.
Still it would be nice to see some screenshots of what it differs from your last variants (and from the Zircon OG) - not played a Mir3 HR, might be worth a bash!
Also on a side note I enjoy(ed) running my server, and will enjoy running my next one (I guess I am a glutton for punishment!)