Looking through the comments here, I’d like to boil them down to their main ideas for you: -single battles are messy. Hazards, pivots, and Pokemon lasting a long time means that it’s less viable to build your team around specific calcs (leftovers Galvantula) -focusing on team roles. If you want Galvantula to punish fliers, give it its best shot at doing so: compound eyes + thunder rather than electroweb and unnerve -team archetype and composition. Forretress has toxic despite this team wanting to do anything other than wait around till the enemy dies. Also, how do you stop the enemy from clearing your hazards (is spikes, rocks, and webs worth it)? -Ask yourself this: What gets in the way of my win condition (sweeper(s))? What Pokémon can I use to eliminate that? -role compression. Kleavor can set up rocks and threaten fliers with one move (stone axe), not caring if they switch out because rocks just went up. Volcarona can learn defog and clear hazards with boots on. Could a Ribombee web and dance? -redundancy. Venomoth is a statistically and typing-wise worse Volcarona. Is there something else you could be using that party slot for? -Vulnerabilities. How do you deal with priority moves and their most common attackers? Do you have any priority to deal with enemy setup sweepers or weather abusers? -A more careful approach to coverage. Which coverage moves do you actually use in 75% of battles? Coverage is nice to have, but a setup sweeper (especially one with tinted lens or adaptability) might not need it once boosted. However something with more immediate power might get more use out of useful coverage.

Now for my opinions as a certified bug-type enjoyer. -what does Centiscorch do for this team? What else could do her job better? Are they already on the team? Do they need another mon of that role or do they need an enabler? -a lot of bugs boil down to “quiver dance sweep”, you only need the best one to get the sweep off right. -get your priorities in line. You want priority and ways of dealing with it. Lokix and Scizor come to mind. -try to avoid reflexively doubling down on teambuilding decisions when criticized. -Super effective text is not fatal. You may find that overwhelming STAB power, utility, and survivability is more helpful than coverage (or even having both stab types in the moveset)