@1094897 I’m so happy you bring up this topid, 'cause I agree 100% on everything you’re saying!
I don’t know if the VATSIM telegram bot for ATC that just came online is still a thing?
I agree to someone who said he’d rather have ATC on arrival than on departure if he had to decide between those two options.
On most flights, I just have ATC on departure, because in lesser popular VACCs, ATC tend to schedule less sessions.
This makes me end up flying to the same 20 airports over and over again, while I got ~100 airports to fly to.
I even decide to buy or not buy payware addon airports upon the fact if it has regular scheduled ATC sessions.
ATC Scheduling is a great tool if everyone used it.
I think many ATC only use it to reserve a station over other Controllers that may want to control that specific position at the same time.
I’ve created a personal google calendar just for ATC schedulings, where I visualise the available ATC on every evening:
Challenge is, that you need to know which ATC logon covers which airports (having an Excel sheet for that matter really helps).
It’s so sad that scheduling sessions is just mostly a european thing. I mean, members from other continents and regions don’t get called by their boss or real life friends to show up to work or to hang out asap more than european members?
Would be soo helpful, especially for long range flights. 
I had contact with a VATSIM member back in December about a replacement tool for vPilot to at least predict the likelyhood of having ATC. He’s still got the code for this and the knowledge on how to do it but he (neither do I) hasn’t got a server to run this (creates about 1.5 GB of data flow per day).
EDIT: Ralph commented just at the time I was writing this comment 
IMHO, raising awareness that scheduled ATC sessions attract pilots is the key to make more ATC use of it (and the availability of data on which ATC logon covers which airports)!