I did the same thing a few months ago and had no issues. I'd recommend changing any devices you have in client mode to transparent as well. Just in case someone comes in with a switch that is in server mode and decides to plug into your network.
The only thing the will happen is that you won't be able to create, modify, and delete VLANs and specify other configuration parameters, such as VTP version and VTP pruning, for the entire VTP domain as in transparent switches do not participate in VTP.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...