There's been lots of solid advice that seems to be falling on somewhat deafs ears, but I'll throw in my two cents anyway.false, tighter pockets will make me a better player. Practicing on a table with tighter pockets will make me more precise. Becoming more precise with my shot making transfers to a higher level of play. Practicing on a harder table makes adjustments to easy tables a lot easier. Which also transfers to a higher level of play.
You can practice precision on a 5" pocket. You don't need ungodly tight pockets to enchance this part of your game. As other have already said. As the pockets get tighter you lose the ability to manlipulate shooting angles that in turn alter what would normally be good pattern play. You may be forcing "precision" in your shot making, but at the expense of the rest of your game. Even though you're under the impression that you don't need to practice CB control. Your game will suffer without you even knowing it.
All that said... if you're serious about changing your pockets to a snooker style cut, just for sake of how it looks and not to play that game specifically. Then you clearly don't understand the reprecussions of that change when pool is going to be the main focus. Which leads me to believe you really don't have a grasp of what will actually make you a stronger player. You really should come to terms with the end goal. Pretty table, or becoming a better player.
I wish you all the success in your pool table reno. Looking forward to see how it turns out.