Elite minions are far more powerful in early game. Bring a 0 cost shard and wrench, then grabbing all of your side’s shards to dump into a bot is an excellent early game play. Buying it at right about the end of the first minute means it’ll hit lane at 28:00, and help give you lane control for the first crystal spawn.
If your first sentry goes down, it automatically destroys all of your buildables in the area. Don’t waste shards buying them if you’re certain the sentry’s about to drop.
Late game, it’s often more efficient to buy the first level of a turret and save shards for another once your enemy destroys it. Any concentrated attention can destroy your turrets, and you don’t need the experience as much anymore - denying your opponents the chance to use them is more valuable, and you can rebuy them much easier if you aren’t dropping an additional 700 shards a pop.
It’s worth remembering which characters can easily take double thrall. ISIC, Montana, Deande, Galilea, Marquis, Thorn, Attikus, and Toby (w/ double stun) can all take the thralls with a minimum of discomfort and time. For everyone else, it’s often not worth the danger and time investment to capture that point. By the same token, the more of those characters you see on the other team, the less effective your double thrall push will be because the enemy team will shred them more easily. If the enemy team is full of AoE characters, I.E. Ernest / KU / Benedict, then they’ll have a great deal of trouble stopping it in time.
Characters that have poor waveclear should remember that a purchased elite bot can clear a wave solo easily for the cost of 600 shards, a valuable thing to remember on Meltdown.
Gear that relies on other people is unreliable in solo queue. This means Healing recieved, Shield Pen, and CC reduction, because that depends on team loadouts you don’t have any say in at all.
If you’re solo queueing as support, play like a coward. You’re squishy and have no guarantee your teammates will try to save you if a Pheobe or Galilea attempts to murder you. Be cautious.