Retiring Unified Messaging in Exchange Online

This is yet another complete joke by Microsoft.  They force users onto another platform/"solution" that doesn't have all the features, and requires users to purchase/buy more licenses to make it work.  For example, we use a 3rd party hosted Skype solution and currently O365 Exchange UM for VM/Auto attendant.  So they host the Skype in their Cloud, and O365 Exchange UM does the VM/AA.  Our vendor moved us over to 2019 Skype Server on-prem which automatically forced us over to Cloud Voicemail.  Yes, MS actually had the greetings moved already for the end-users and things mostly work the same, and they did add one useful features, greeting can follow OOO in outlook.  But of course, after testing the auto attendant and Call Queues in Teams Voice, come to find out, we need to buy phone licenses for any user you transfer calls to from a Call Tree?!?!  This cost nothing now for customers.  If you have 8 internal numbers, well, you have to drop $1200/yr now to make that happen on top of the licensing E3 we already have and our vendor integrates with UM.   Then, there is this ridiculous thing that you can't transfer calls to external numbers?!?!  Seriously!!!!  Only way we could figure this out would be to create an extra user with E3 license/phone license, and set a forwarding rule on that user to an outside number so.   So in the Cloud AA, it would then see it as an internal user, then route to them, then forward to the external number?!?!  But if you have multiple external numbers you route to...oh let's say, for reservations or something to another location/office...well, it won't work now unless we rig something again, costing more money/licenses that costs nothing and just works now in Exchange UM.  So, more money, less features...and they say, sorry, deal with it.  Oh, and they promised Q4 2019 you can route externally.  Hasn't happened yet.  Broken promise again and feature that doesn't exist still.  Our cloud vendor is saying let's hope MS last minute backs out of this and extends the termination as usual with many things if they get enough push back.  They have no answer to solve this issue unless they host the AA/Queues for $$$.  They are really trying to get rid of on-premise, 3rd party Skype hosted solutions and force everybody to their cloud and Teams to make more $$$$$.  Don't blame them, but don't promise and force people onto things that don't have the same features and abilities of current systems.  At a complete loss here on this one.  We aren't sure what to do.  Now user's have cloud voicemail, OK, good, whatever, it works.  But now our AA and Call Queues are FUBAR.  Thanks MS!!!