The value of the bases was useful for Russia because of their location. It was never about keeping Assad in power, but it was about keeping US supported terrorists from taking over and then breaking because of all the factions whose only thing keeping them together was the fight against Assad... once Assad is gone these groups are not going to cooperate well together meaning instead of a transition from Assad to some other government it will likely be more like Libya... from organized government to factions fighting a civil war.
Russia was never about telling Syria how to behave or what laws to have. If the Syrian government wants its women in ninja suits and to never walk alone without a male family member then that is their business... Russia will never tell them what is right or wrong.
I understand that point but having two important bases in a country with leadership that's in bed with Turkey/NATO/anti-Russian jihadists, while Russia is in conflict with these folks in Ukraine is not desirable.
They've already broken deals and have escalated to harm Russia's interests, why would they be trusted now? With expensive equipment and Russian servicemen at these bases. Where else on earth does a great power have bases in a country whose people and leadership that largely despises them and one in which that great power bombed them for years and did everything they could to destroy them...It's too messy and there's no point in Russia being in Syria as of now.
Russia should build bases in North Africa, they have the transport planes that can reach there and no need for refueling. Start fresh, Africa relations are more important now for Russia. They've already hurt Western interests there and can continue to do so with new bases set up if they want to...