First be okay with the fact the bathroom tiles might need to be replaced. All of them. Replacing them in the bathroom will have the least impact on the rest of the house and whatever comes out in one piece, can be stored for future cracks. Maybe you can find a similar color but a different size, so it won't look too awkward, just an idea. Taking out a cracked tile is quite easy. Put on some gloves and safety glasses and (carefully) smash the broken tile with a hammer. An old screwdriver or chisel will help you tilt the pieces out. Work from the hole outwards to remove the other tiles. Removing a good tile is nearly impossible. Assuming it is still glued firmly, I'd say impossible. But, if you want to try anyway, you'll need to mill out the grout and then figure out a way to lift the tile..

Medicine cabinets have come along way in recent years. The best option is to get a frameless style and integrate it into a wall of mirror. You can mount sconces thru the mirror on either side of the cabinet. If you have walls on either side of the sink, you can put the cabinets to the side, integrated into mirror again. If you have an open wall in your bath, yo can get an extra tall medicine cabinet to hold loads of stuff. There are loads more on houzz photos. Just search medicine cabinet. Sometimes you have to hunt for the cabinet because they are so well integrated. Robern makes some of the best frameless styles, but there are a ton of others on faucetdirect.com. Many even come with integrated lighting for a very modern look.

Total reno of bathroom and ensuite. Need to keep in cream tones not grey as bathroom door needs to stay cream as per all other doors in house and interior colours. Sampled grey tone tiles and they clashed. New vanity below, light oak, pic of old ensuite, and ideas. Want to keep wall and floor at 600x600mm. Selling house so wide appeal needed. Darker floor and white walls ( by either dark tiles or a darker timber effect floor as pics) OR white floor and walls (do they need dark grout as per example below)? Will 600x600mm work for both floor and walls. Will 2x 600mm work up walls, dont want to go 3 high. Doing this to keep costs down. Painting everything else white and installing white shutters. Showers to remain as is, glass with aluminum frame.

Thankyou very much!