SURPRISE ROUNDS. I did not see this specifically enumerated in the compilation post, so here's a suggestion to include it. Surprise round mechanics are currently unpredictable - sometimes when you engage from stealth your party will each get their chance to strike before joining the initiative order. Sometimes on the very 1st attack initiative is rolled, regardless of being in stealth or visible to enemies, resulting in a sort of "Reverse Surprise Round". This needs to get worked on.
Another problem with combat mechanics & initiative - when two or more characters "share" an initiative value, and you end the turn, it sometimes skips characters that have not yet taken their action. This needs to be reworked so that each click of the End Turn button ONLY ends the turn for the active character, not the next character who just happens to be on the same initiative value. This has resulted in me manually selecting the characters who share an initiative to make sure they all take their actions, which is unnecessary and wrong.