Rebrand Delta Sportcentrum

Right now I'm working on a rebranding for Delta sportcentrum.
Delta sportcentrum wants there brand to be updated because they want to become a better and bigger player in their market.

You can check the old logo here: https://deltasportcentrum.nl

This sportcenter is very discreet about their clients and wants to be a more 'luxurious' sport center. they are very humble in the way they present them selfs.

Please give some feedback on this logo!
Let mo know what you like and what you don't like ( and why ;) )