You can retreat micro auroras and macro to get correct amount of scouts aa and t1 arty in your aeon t1 armies (1-2 scouts 1-2 t1 arty and all other should be auroras, mix aa if you have no air and opponent have air)
You can have fast mantis that you have to micro to not let them turn to fast (they can't shoot while turn) and surround enemy units (you can targetfire some and retreat), and if map or situation allows utulize medusa spam and retreat micro with medusas
You can be Sera and spam decent Thaam + zthuee combo for all game, just micro to thaam take damage and zthuee not take damage, also zthuees are acu killers if youre able to block enemy acu with tanks (or just half block)
for uef/cyb/aeon you also have Light Assoult bots, and uef ones are great against mantis especially
sera have selens that you can leave in key areas on map to have constant intel, also they can harras unprotected ingeners (1 selen kills 1 engy if you micro)
uef/sera t1 tanks can fully utulize dodge micro (cause they can shoot and dodge)
only uef have bad t1 bomber, for other factions you can micro t1 bobmer and it is pretty hard, need accurate clicks
for uef/aeon/cybran you have ghetto gunships
and also cybran have jester and jester or ghetto can harras for really long in games on small maps (just run on enemy base and kill engyes before he made aa, also will will forse him to make aa, then run around map and poke and avoid aa until he make enought ints to overwhelm your int spam
also air plays overall pretty micro intencive
also you can go fast t2 for cyb and try to use hoplites but they are pretty fragile
Not sure if i said all things right, but i like t1 phase of this game
also air 1rst is a possibility on small maps
Edit: do not forget to mix engyes to reclaim and make radars
and 2 mechmarines can kill mantis if they run around it (or even one mechmarine, but i have not seen this often)