I know some of us only like to play with players among our same or higher level of skill/experience . We do not like to be teamed up with lower level players which normally equals to just average or below average skilled players due to the lack of experience they have. We also do not like to go against lower levels. Yes, I know there are many level 100 that play worse than level 10. However, chances were still high to find skilled players among those ranks compared to lower tiers.
With the CR level now hidden the only feature available to pinpoint if you are skilled or inexperienced before the match even starts is by title recognition. Yes you can still view the levels of your team members and opponents in the character selection screen but I’m sure that will get patched soon(assuming the devs stick with the idea of hiding the CR)
For example, titles like “Medicinal Use Only”, “Bada Bada Boooom”, “Fours Sensitive”, or the title to kill 50 sentries without taking damage (forgot the name) will speak volume on how much experience and skill you might have.