The graphics are certainly dear, even if they were refined and optimised the style should stay and be embraced
And hey, it doesn't have to break the internet to still be a success, bring more eyes to your work, or if you did choose to sell it even make a few quid for an endearing little project (or hell maybe some donation page others would use- baby steps)
Last thing to say about balance - even if ants or mossies didnt have the damage, the shields make them good tanks, that's the basis of their use, this is also mixed with units staying at the absolute limit of their range, or units walking past mozzies and mozzies lose targeting etc - trying to crawl forward with snipers, vs a swarm, is agonisingly slow - if they (snipers) did something like shoot, move, shoot, move, until a target was at say 80% of their range instead, this could make artillery more useful - unsure if they may become too strong though