clusters are ok, if u have not the experience to not hide in too long tight places it is ur own fault if the opponent is skilled enough to make u -75 hp. A perfect knock (worm in worm) at tight isn't always easy and takes time, so cluster is ok because it improves skill and tactic.
By far the best and very important thing is to add a weapon which you have from beginning of the game. I don't like zooka much, it depends too much on wind luck if u can make good - and you cant even use zook often in tight maps to make good attacks.
I would prefer to add one or two mines. Then u have a standardweap to avoid bl weapons. To drop the mine correct is a skill, too, so the skill of the game would be improved very much.
Firepunch has to be removed or powered up, that for sure. Non weap is more bad and useless in the shopper and wxw scheme.
For people who think only to the first step: Yes, you can plop or pile or push the opponent worm with it, but the problem is, that you can't hide after using it and that that pushes and plops are possible with all other real shopperweapons, too!