Currently leaked creeps only give 1 gold regardless of what wave has been leaked. In my personal opinion that is very suboptimal, especially since there now are builders which potentially *cannot* not leak some waves (*cough*, random builder *cough*). And even then there are builders which are more interested in doing ofher stuff than not leaking (the same random builder who's interested in saving tangos, but also the human builder who's interested in the same, AFAICT so far)

So my suggestion is as thus: make "leak plugging" and "intentional leaking" a viable strategy. "leak plugging" would refer to players who focus on cleaning up on other people's leaks[^1], so the other people could focus on other things (such as upgrading the king and otherwise focusing on tango generation) and who might end up "intentionally leaking" creeps sometimes.

To make this work there ought to be significant advantage to leak plugging. Getting 1 gold for each leaked creep cleaned up in wave 29 is really insignificant. 50% of the regular worth would be much better and would encourage people to not min-max very much as well as the game itself gaining extra vectors of strategy that could be partaken by the more experienced teams.

[^1]: Builders mostly uninterested in tango production are especially suitable for it (elemental/nature).