As a current town holder i believe it is insanely frustrating that, while invasions are happening you can basically not do anything to stop a massive group of 50 people instantly finishing the territory influence while your Company is currently busy in an invasion.
In my opinion there should be a little period for a faction while an invasion is about to begin and end, 30 minutes or so before and after an invasion a different faction cannot gain territory influence to stop say 2 or 3 companies from grouping together and instantly warring against a company while they are unable to do anything about it due to an invasion taking place.
it is simply so insanely frustrating that you cannot do anything about it in any way. all of my company members have added onto with their thoughts and it was all negative frustrations at the system allowing someone to simply wait for an invasion and then just get a free war against anyone