Area cloaker is OP and was OP. They should eat more E i think. Another OP thing is cloaky construction bot with his small area shield. Dis thong is very OP.
However most area cloaker is coming from coms. And com area cloak is very annoying.
And one swift can be used to scout and arty fire manually. Then no problems with 'no vision' against buildings. Of course cloaked unit balls is annoying too. However there is some counters as well because everyone can build mobile cloaker from cornea and build imps/snitches. Dats my favorite tactics to deal with cloaked balls. Other is tremor (who should be removed from game i hate it) and firewalker.